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FRC?","shockwave-curriculum\u002Flessons\u002Fch01-why-java-for-frc\u002F1.1-why-java-for-frc",{"path":9,"title":10,"stem":11},"\u002Fshockwave-curriculum\u002Flessons\u002Fch01-why-java-for-frc\u002F2-intro-to-algorithms-programming-and-compilers","Intro to Algorithms, Programming & Compilers","shockwave-curriculum\u002Flessons\u002Fch01-why-java-for-frc\u002F1.2-intro-to-algorithms-programming-and-compilers",{"path":13,"title":14,"stem":15},"\u002Fshockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F1-variables-and-data-types","Variables & Data Types","shockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F2.1-variables-and-data-types",{"path":17,"title":18,"stem":19},"\u002Fshockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F2-expressions-and-output","Expressions & Output","shockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F2.2-expressions-and-output",{"path":21,"title":22,"stem":23},"\u002Fshockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F3-assignment-and-input","Assignment & Input","shockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F2.3-assignment-and-input",{"path":25,"title":26,"stem":27},"\u002Fshockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F4-casting-and-ranges-of-values","Casting & Ranges of Values","shockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F2.4-casting-and-ranges-of-values",{"path":29,"title":30,"stem":31},"\u002Fshockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F5-compound-assignment-operators","Compound Assignment Operators","shockwave-curriculum\u002Flessons\u002Fch02-variables-and-types\u002F2.5-compound-assignment-operators",{"path":33,"title":34,"stem":35},"\u002Fshockwave-curriculum\u002Flessons\u002Fch03-apis-libraries-and-documentation\u002F1-apis-and-libraries","APIs and Libraries","shockwave-curriculum\u002Flessons\u002Fch03-apis-libraries-and-documentation\u002F3.1-apis-and-libraries",{"path":37,"title":38,"stem":39},"\u002Fshockwave-curriculum\u002Flessons\u002Fch03-apis-libraries-and-documentation\u002F2-documentation-with-comments-and-preconditions","Documentation with Comments and Preconditions","shockwave-curriculum\u002Flessons\u002Fch03-apis-libraries-and-documentation\u002F3.2-documentation-with-comments-and-preconditions",{"path":41,"title":42,"stem":43},"\u002Fshockwave-curriculum\u002Flessons\u002Fch03-apis-libraries-and-documentation\u002F3-packages-and-imports","Packages & Imports","shockwave-curriculum\u002Flessons\u002Fch03-apis-libraries-and-documentation\u002F3.3-packages-and-imports",{"path":45,"title":46,"stem":47},"\u002Fshockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F1-methods-signatures-and-parameters","Methods, Signatures & Parameters","shockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F4.1-methods-signatures-and-parameters",{"path":49,"title":50,"stem":51},"\u002Fshockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F2-calling-class-methods","Calling Class Methods","shockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F4.2-calling-class-methods",{"path":53,"title":54,"stem":55},"\u002Fshockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F3-using-the-math-class","Using the Math Class","shockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F4.3-using-the-math-class",{"path":57,"title":58,"stem":59},"\u002Fshockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F4-objects-instances-of-classes","Objects — Instances of Classes","shockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F4.4-objects-instances-of-classes",{"path":61,"title":62,"stem":63},"\u002Fshockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F5-creating-and-initializing-objects-constructors","Creating & Initializing Objects: Constructors","shockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F4.5-creating-and-initializing-objects-constructors",{"path":65,"title":66,"stem":67},"\u002Fshockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F6-calling-instance-methods","Calling Instance Methods","shockwave-curriculum\u002Flessons\u002Fch04-using-objects-and-calling-methods\u002F4.6-calling-instance-methods",{"path":69,"title":70,"stem":71},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F1-5.2-if-statements-and-for-loops","Control Structures: if Statements & For Loops","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.1-5.2-if-statements-and-for-loops",{"path":73,"title":74,"stem":75},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F10-nested-iteration","Nested Iteration","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.10-nested-iteration",{"path":77,"title":78,"stem":79},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F11-informal-runtime-analysis-of-loops","Informal Runtime Analysis of Loops","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.11-informal-runtime-analysis-of-loops",{"path":81,"title":82,"stem":83},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F3-algorithms-with-selection-and-repetition","Algorithms with Selection and Repetition","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.3-algorithms-with-selection-and-repetition",{"path":85,"title":86,"stem":87},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F4-boolean-expressions","Boolean Expressions","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.4-boolean-expressions",{"path":89,"title":90,"stem":91},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5-nested-if-statements","Nested if Statements","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.5-nested-if-statements",{"path":93,"title":94,"stem":95},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F6-compound-boolean-expressions","Compound Boolean Expressions","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.6-compound-boolean-expressions",{"path":97,"title":98,"stem":99},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F7-comparing-boolean-expressions-de-morgans-laws","Comparing Boolean Expressions (De Morgan's Laws)","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.7-comparing-boolean-expressions-de-morgans-laws",{"path":101,"title":102,"stem":103},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F8-while-loops","While Loops","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.8-while-loops",{"path":105,"title":106,"stem":107},"\u002Fshockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F9-implementing-selection-and-iteration-algorithms","Implementing Selection and Iteration Algorithms","shockwave-curriculum\u002Flessons\u002Fch05-control-structures\u002F5.9-implementing-selection-and-iteration-algorithms",{"path":109,"title":110,"stem":111},"\u002Fshockwave-curriculum\u002Flessons\u002Fch06-strings\u002F1-strings","Strings","shockwave-curriculum\u002Flessons\u002Fch06-strings\u002F6.1-strings",{"path":113,"title":114,"stem":115},"\u002Fshockwave-curriculum\u002Flessons\u002Fch06-strings\u002F2-string-algorithms","String Algorithms","shockwave-curriculum\u002Flessons\u002Fch06-strings\u002F6.2-string-algorithms",{"path":117,"title":118,"stem":119},"\u002Fshockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F1-anatomy-of-a-java-class","The Class Blueprint","shockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F7.1-anatomy-of-a-java-class",{"path":121,"title":122,"stem":123},"\u002Fshockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F2-methods-how-to-write-them","Methods: How to Write Them","shockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F7.2-methods-how-to-write-them",{"path":125,"title":126,"stem":127},"\u002Fshockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F3-methods-passing-and-returning-references-of-an-object","Methods: Passing & Returning References of an Object","shockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F7.3-methods-passing-and-returning-references-of-an-object",{"path":129,"title":130,"stem":131},"\u002Fshockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F4-class-static-variables-and-methods","Class (static) Variables & Methods","shockwave-curriculum\u002Flessons\u002Fch07-the-class-blueprint\u002F7.4-class-static-variables-and-methods",{"path":133,"title":134,"stem":135},"\u002Fshockwave-curriculum\u002Flessons\u002Fch08-constructors-and-this\u002F1-8.2-constructors-and-this","Constructors & \"this\"","shockwave-curriculum\u002Flessons\u002Fch08-constructors-and-this\u002F8.1-8.2-constructors-and-this",{"path":137,"title":138,"stem":139},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F1-array-creation-and-access","Array Creation and Access","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.1-array-creation-and-access",{"path":141,"title":142,"stem":143},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F2-arraylist-and-its-methods","ArrayList and its Methods","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.2-arraylist-and-its-methods",{"path":145,"title":146,"stem":147},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F3-optional-hashmap-dictionary-data-structure","Optional: HashMap (Dictionary) Data Structure","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure",{"path":149,"title":150,"stem":151},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F4-array-traversals","Array Traversals","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.4-array-traversals",{"path":153,"title":154,"stem":155},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F5-implementing-array-algorithms","Implementing Array Algorithms","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.5-implementing-array-algorithms",{"path":157,"title":158,"stem":159},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F6-arraylist-traversals","ArrayList Traversals","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.6-arraylist-traversals",{"path":161,"title":162,"stem":163},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F7-implementing-arraylist-algorithms","Implementing ArrayList Algorithms","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.7-implementing-arraylist-algorithms",{"path":165,"title":166,"stem":167},"\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F8-using-text-files","Using Text Files","shockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.8-using-text-files",{"path":169,"title":170,"stem":171},"\u002Fshockwave-curriculum\u002Flessons\u002Fch10-2d-arrays\u002F1-2d-array-creation-and-access","2D Array Creation and Access","shockwave-curriculum\u002Flessons\u002Fch10-2d-arrays\u002F10.1-2d-array-creation-and-access",{"path":173,"title":174,"stem":175},"\u002Fshockwave-curriculum\u002Flessons\u002Fch10-2d-arrays\u002F2-2d-array-traversals-nested-loops","2D Array Traversals: Nested Loops","shockwave-curriculum\u002Flessons\u002Fch10-2d-arrays\u002F10.2-2d-array-traversals-nested-loops",{"path":177,"title":178,"stem":179},"\u002Fshockwave-curriculum\u002Flessons\u002Fch10-2d-arrays\u002F3-implementing-2d-array-algorithms","Implementing 2D Array Algorithms","shockwave-curriculum\u002Flessons\u002Fch10-2d-arrays\u002F10.3-implementing-2d-array-algorithms",{"path":181,"title":182,"stem":183},"\u002Fshockwave-curriculum\u002Flessons\u002Fch11-enums-named-choices\u002F11-enums-named-choices","Enums: Named Choices","shockwave-curriculum\u002Flessons\u002Fch11-enums-named-choices\u002F11-enums-named-choices",{"path":185,"title":186,"stem":187},"\u002Fshockwave-curriculum\u002Flessons\u002Fch12-exceptions-and-try-catch\u002F12-exceptions-and-try-catch","Exceptions & try\u002Fcatch","shockwave-curriculum\u002Flessons\u002Fch12-exceptions-and-try-catch\u002F12-exceptions-and-try-catch",{"path":189,"title":190,"stem":191},"\u002Fshockwave-curriculum\u002Flessons\u002Fch13-common-gotchas\u002F13-common-gotchas","Common Gotchas","shockwave-curriculum\u002Flessons\u002Fch13-common-gotchas\u002F13-common-gotchas",{"path":193,"title":194,"stem":195},"\u002Fshockwave-curriculum\u002Flessons\u002Fch14-why-design-patterns\u002F14-why-design-patterns","Why Design Patterns?","shockwave-curriculum\u002Flessons\u002Fch14-why-design-patterns\u002F14-why-design-patterns",{"path":197,"title":198,"stem":199},"\u002Fshockwave-curriculum\u002Flessons\u002Fch15-advanced-collections\u002F15-advanced-collections","Advanced Collections (Set\u002FQueue\u002FMap)","shockwave-curriculum\u002Flessons\u002Fch15-advanced-collections\u002F15-advanced-collections",{"path":201,"title":202,"stem":203},"\u002Fshockwave-curriculum\u002Flessons\u002Fch16-writing-your-own-generics\u002F16-writing-your-own-generics","Writing Your Own Generics","shockwave-curriculum\u002Flessons\u002Fch16-writing-your-own-generics\u002F16-writing-your-own-generics",{"path":205,"title":206,"stem":207},"\u002Fshockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F1-inheritance-superclass-subclass","Inheritance, Superclass, Subclass","shockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F17.1-inheritance-superclass-subclass",{"path":209,"title":210,"stem":211},"\u002Fshockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F2-inheritance-and-constructors","Inheritance and Constructors","shockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F17.2-inheritance-and-constructors",{"path":213,"title":214,"stem":215},"\u002Fshockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F3-inheritance-hierarchies","Inheritance Hierarchies","shockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F17.3-inheritance-hierarchies",{"path":217,"title":218,"stem":219},"\u002Fshockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F4-object-superclass","Object Superclass","shockwave-curriculum\u002Flessons\u002Fch17-inheritance-and-abstractions\u002F17.4-object-superclass",{"path":221,"title":222,"stem":223},"\u002Fshockwave-curriculum\u002Flessons\u002Fch18-polymorphism-many-forms\u002F1-overriding-methods","Overriding Methods","shockwave-curriculum\u002Flessons\u002Fch18-polymorphism-many-forms\u002F18.1-overriding-methods",{"path":225,"title":226,"stem":227},"\u002Fshockwave-curriculum\u002Flessons\u002Fch18-polymorphism-many-forms\u002F2-super-keyword","super Keyword","shockwave-curriculum\u002Flessons\u002Fch18-polymorphism-many-forms\u002F18.2-super-keyword",{"path":229,"title":230,"stem":231},"\u002Fshockwave-curriculum\u002Flessons\u002Fch18-polymorphism-many-forms\u002F3-polymorphism","Polymorphism","shockwave-curriculum\u002Flessons\u002Fch18-polymorphism-many-forms\u002F18.3-polymorphism",{"path":233,"title":234,"stem":235},"\u002Fshockwave-curriculum\u002Flessons\u002Fch19-interfaces-as-contracts\u002F19-interfaces-as-contracts","Interfaces as Contracts","shockwave-curriculum\u002Flessons\u002Fch19-interfaces-as-contracts\u002F19-interfaces-as-contracts",{"path":237,"title":238,"stem":239},"\u002Fshockwave-curriculum\u002Flessons\u002Fch19-interfaces-as-contracts\u002F1-lambdas-and-method-references","Lambdas & Method References","shockwave-curriculum\u002Flessons\u002Fch19-interfaces-as-contracts\u002F19.1-lambdas-and-method-references",{"path":241,"title":242,"stem":243},"\u002Fshockwave-curriculum\u002Flessons\u002Fch20-the-io-layer-pattern\u002F20-the-io-layer-pattern","The IO-Layer Pattern","shockwave-curriculum\u002Flessons\u002Fch20-the-io-layer-pattern\u002F20-the-io-layer-pattern",{"path":245,"title":246,"stem":247},"\u002Fshockwave-curriculum\u002Flessons\u002Fch21-static-factories\u002F21-static-factories","Static Factories","shockwave-curriculum\u002Flessons\u002Fch21-static-factories\u002F21-static-factories",{"path":249,"title":250,"stem":251},"\u002Fshockwave-curriculum\u002Flessons\u002Fch22-the-builder-pattern\u002F22-the-builder-pattern","The Builder Pattern","shockwave-curriculum\u002Flessons\u002Fch22-the-builder-pattern\u002F22-the-builder-pattern",{"path":253,"title":254,"stem":255},"\u002Fshockwave-curriculum\u002Flessons\u002Fch23-encapsulation-and-final\u002F1-scope-and-access","Scope and Access","shockwave-curriculum\u002Flessons\u002Fch23-encapsulation-and-final\u002F23.1-scope-and-access",{"path":257,"title":258,"stem":259},"\u002Fshockwave-curriculum\u002Flessons\u002Fch24-optional-avoiding-null-pointer-exceptions\u002F24-optional-avoiding-null-pointer-exceptions","Optional: Avoiding Null Pointer Exceptions","shockwave-curriculum\u002Flessons\u002Fch24-optional-avoiding-null-pointer-exceptions\u002F24-optional-avoiding-null-pointer-exceptions",{"path":261,"title":262,"stem":263},"\u002Fshockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F1-what-is-command-based-programming","What Is Command-Based Programming?","shockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F25.1-what-is-command-based-programming",{"path":265,"title":266,"stem":267},"\u002Fshockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F2-commands-and-command-compositions","Commands & Command Compositions","shockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F25.2-commands-and-command-compositions",{"path":269,"title":270,"stem":271},"\u002Fshockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F3-the-command-scheduler","The Command Scheduler","shockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F25.3-the-command-scheduler",{"path":273,"title":274,"stem":275},"\u002Fshockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F4-state-machines-logic","State Machines: Logic","shockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F25.4-state-machines-logic",{"path":277,"title":278,"stem":279},"\u002Fshockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F5-managing-transitions","Managing Transitions","shockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F25.5-managing-transitions",{"path":281,"title":282,"stem":283},"\u002Fshockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F6-binding-commands-to-triggers","Binding Commands to Triggers","shockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F25.6-binding-commands-to-triggers",{"path":285,"title":286,"stem":287},"\u002Fshockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F7-structuring-a-command-based-robot-project","Structuring a Command-Based Robot Project","shockwave-curriculum\u002Flessons\u002Fch25-command-based-programming\u002F25.7-structuring-a-command-based-robot-project",{"path":289,"title":290,"stem":291},"\u002Fshockwave-curriculum\u002Flessons\u002Fch26-architecture-takeaways\u002F26-architecture-takeaways","Architecture Takeaways","shockwave-curriculum\u002Flessons\u002Fch26-architecture-takeaways\u002F26-architecture-takeaways",{"path":293,"title":294,"stem":295},"\u002Fshockwave-curriculum\u002Flessons\u002Fch27-program-design-and-abstraction\u002F1-abstraction-and-program-design","Abstraction and Program Design","shockwave-curriculum\u002Flessons\u002Fch27-program-design-and-abstraction\u002F27.1-abstraction-and-program-design",{"path":297,"title":298,"stem":299},"\u002Fshockwave-curriculum\u002Flessons\u002Fch27-program-design-and-abstraction\u002F2-impact-of-program-design","Impact of Program Design","shockwave-curriculum\u002Flessons\u002Fch27-program-design-and-abstraction\u002F27.2-impact-of-program-design",{"path":301,"title":302,"stem":303},"\u002Fshockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F1-searching-algorithms","Searching Algorithms","shockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F28.1-searching-algorithms",{"path":305,"title":306,"stem":307},"\u002Fshockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F2-sorting-algorithms","Sorting Algorithms","shockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F28.2-sorting-algorithms",{"path":309,"title":310,"stem":311},"\u002Fshockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F3-recursion","Recursion","shockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F28.3-recursion",{"path":313,"title":314,"stem":315},"\u002Fshockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F4-recursive-searching-and-sorting","Recursive Searching and Sorting","shockwave-curriculum\u002Flessons\u002Fch28-algorithms-searching-sorting-recursion\u002F28.4-recursive-searching-and-sorting",{"path":317,"title":318,"stem":319},"\u002Fshockwave-curriculum\u002Flessons\u002Fch29-git-and-github-basics\u002F1-coming-soon","Git & GitHub Basics — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch29-git-and-github-basics\u002F29.1-coming-soon",{"path":321,"title":322,"stem":323},"\u002Fshockwave-curriculum\u002Flessons\u002Fch30-git-history-and-merging\u002F1-coming-soon","Git — History & Merging — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch30-git-history-and-merging\u002F30.1-coming-soon",{"path":325,"title":326,"stem":327},"\u002Fshockwave-curriculum\u002Flessons\u002Fch31-dev-environment-and-tooling\u002F1-coming-soon","Dev Environment & Tooling — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch31-dev-environment-and-tooling\u002F31.1-coming-soon",{"path":329,"title":330,"stem":331},"\u002Fshockwave-curriculum\u002Flessons\u002Fch32-unit-testing\u002F1-coming-soon","Unit Testing — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch32-unit-testing\u002F32.1-coming-soon",{"path":333,"title":334,"stem":335},"\u002Fshockwave-curriculum\u002Flessons\u002Fch33-advantagekit-autologging\u002F1-coming-soon","AdvantageKit — AutoLogging — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch33-advantagekit-autologging\u002F33.1-coming-soon",{"path":337,"title":338,"stem":339},"\u002Fshockwave-curriculum\u002Flessons\u002Fch34-log-replay\u002F1-coming-soon","Log Replay — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch34-log-replay\u002F34.1-coming-soon",{"path":341,"title":342,"stem":343},"\u002Fshockwave-curriculum\u002Flessons\u002Fch35-advantagescope-i-visualization\u002F1-coming-soon","AdvantageScope I: Visualization — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch35-advantagescope-i-visualization\u002F35.1-coming-soon",{"path":345,"title":346,"stem":347},"\u002Fshockwave-curriculum\u002Flessons\u002Fch36-advantagescope-ii-custom-3d-assets\u002F1-coming-soon","AdvantageScope II: Custom 3D Assets — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch36-advantagescope-ii-custom-3d-assets\u002F36.1-coming-soon",{"path":349,"title":350,"stem":351},"\u002Fshockwave-curriculum\u002Flessons\u002Fch37-autonomous-i\u002F1-coming-soon","Autonomous I — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch37-autonomous-i\u002F37.1-coming-soon",{"path":353,"title":354,"stem":355},"\u002Fshockwave-curriculum\u002Flessons\u002Fch38-autonomous-ii-pathplanner-and-trajectories\u002F1-coming-soon","Autonomous II: PathPlanner & Trajectories — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch38-autonomous-ii-pathplanner-and-trajectories\u002F38.1-coming-soon",{"path":357,"title":358,"stem":359},"\u002Fshockwave-curriculum\u002Flessons\u002Fch39-control-fundamentals\u002F1-coming-soon","Control Fundamentals — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch39-control-fundamentals\u002F39.1-coming-soon",{"path":361,"title":362,"stem":363},"\u002Fshockwave-curriculum\u002Flessons\u002Fch40-motion-profiles\u002F1-coming-soon","Motion Profiles — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch40-motion-profiles\u002F40.1-coming-soon",{"path":365,"title":366,"stem":367},"\u002Fshockwave-curriculum\u002Flessons\u002Fch41-hardware-fundamentals\u002F1-coming-soon","Hardware Fundamentals — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch41-hardware-fundamentals\u002F41.1-coming-soon",{"path":369,"title":370,"stem":371},"\u002Fshockwave-curriculum\u002Flessons\u002Fch42-photonvision\u002F1-coming-soon","PhotonVision — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch42-photonvision\u002F42.1-coming-soon",{"path":373,"title":374,"stem":375},"\u002Fshockwave-curriculum\u002Flessons\u002Fch43-apriltags-and-pose\u002F1-coming-soon","AprilTags & Pose — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch43-apriltags-and-pose\u002F43.1-coming-soon",{"path":377,"title":378,"stem":379},"\u002Fshockwave-curriculum\u002Flessons\u002Fch44-subsystems-i\u002F1-coming-soon","Subsystems I — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch44-subsystems-i\u002F44.1-coming-soon",{"path":381,"title":382,"stem":383},"\u002Fshockwave-curriculum\u002Flessons\u002Fch45-subsystems-ii-advanced\u002F1-coming-soon","Subsystems II — Advanced — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch45-subsystems-ii-advanced\u002F45.1-coming-soon",{"path":385,"title":386,"stem":387},"\u002Fshockwave-curriculum\u002Flessons\u002Fch46-team-utilities-i\u002F1-coming-soon","Team Utilities I — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch46-team-utilities-i\u002F46.1-coming-soon",{"path":389,"title":390,"stem":391},"\u002Fshockwave-curriculum\u002Flessons\u002Fch47-field-constants\u002F1-coming-soon","Field Constants — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch47-field-constants\u002F47.1-coming-soon",{"path":393,"title":394,"stem":395},"\u002Fshockwave-curriculum\u002Flessons\u002Fch48-troubleshooting-i-runtime-debug\u002F1-coming-soon","Troubleshooting I — Runtime Debug — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch48-troubleshooting-i-runtime-debug\u002F48.1-coming-soon",{"path":397,"title":398,"stem":399},"\u002Fshockwave-curriculum\u002Flessons\u002Fch49-troubleshooting-ii-can-and-sim\u002F1-coming-soon","Troubleshooting II: CAN & Sim — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch49-troubleshooting-ii-can-and-sim\u002F49.1-coming-soon",{"path":401,"title":402,"stem":403},"\u002Fshockwave-curriculum\u002Flessons\u002Fch50-vendor-libraries-talonfx\u002F1-coming-soon","Vendor Libraries: TalonFX — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch50-vendor-libraries-talonfx\u002F50.1-coming-soon",{"path":405,"title":406,"stem":407},"\u002Fshockwave-curriculum\u002Flessons\u002Fch51-robot-alerts\u002F1-coming-soon","Robot Alerts — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch51-robot-alerts\u002F51.1-coming-soon",{"path":409,"title":410,"stem":411},"\u002Fshockwave-curriculum\u002Flessons\u002Fch52-wpilib-commands\u002F1-coming-soon","WPILib Commands — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch52-wpilib-commands\u002F52.1-coming-soon",{"path":413,"title":414,"stem":415},"\u002Fshockwave-curriculum\u002Flessons\u002Fch53-wpilib-geometry\u002F1-coming-soon","WPILib Geometry — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch53-wpilib-geometry\u002F53.1-coming-soon",{"path":417,"title":418,"stem":419},"\u002Fshockwave-curriculum\u002Flessons\u002Fch54-networktables\u002F1-coming-soon","NetworkTables — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch54-networktables\u002F54.1-coming-soon",{"path":421,"title":422,"stem":423},"\u002Fshockwave-curriculum\u002Flessons\u002Fch55-command-scheduler\u002F1-coming-soon","Command Scheduler — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch55-command-scheduler\u002F55.1-coming-soon",{"path":425,"title":426,"stem":427},"\u002Fshockwave-curriculum\u002Flessons\u002Fch56-wpilib-timers\u002F1-coming-soon","WPILib Timers — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch56-wpilib-timers\u002F56.1-coming-soon",{"path":429,"title":430,"stem":431},"\u002Fshockwave-curriculum\u002Flessons\u002Fch57-wpilib-triggers\u002F1-coming-soon","WPILib Triggers — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch57-wpilib-triggers\u002F57.1-coming-soon",{"path":433,"title":434,"stem":435},"\u002Fshockwave-curriculum\u002Flessons\u002Fch58-vendor-units-and-conversions\u002F1-coming-soon","Vendor Units & Conversions — Coming Soon","shockwave-curriculum\u002Flessons\u002Fch58-vendor-units-and-conversions\u002F58.1-coming-soon",[437,441,445,449,453,457,461,465,469,473,477,481,485,489,493,497,501,505,509,513,517,521,525,529,533,537,541,545,549,553,557,561,565,569,573,577,581,585,589,593],{"path":438,"title":439,"stem":440},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch01-why-java-for-frc\u002F2-intro-to-algorithms-programming-and-compilers","Intro to Algorithms, Programming & Compilers — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch01-why-java-for-frc\u002F1.2-intro-to-algorithms-programming-and-compilers",{"path":442,"title":443,"stem":444},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F1-variables-and-data-types","Variables & Data Types — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F2.1-variables-and-data-types",{"path":446,"title":447,"stem":448},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F2-expressions-and-output","Expressions & Output — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F2.2-expressions-and-output",{"path":450,"title":451,"stem":452},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F3-assignment-and-input","Assignment & Input — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F2.3-assignment-and-input",{"path":454,"title":455,"stem":456},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F4-casting-and-ranges-of-values","Casting & Ranges of Values — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F2.4-casting-and-ranges-of-values",{"path":458,"title":459,"stem":460},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F5-compound-assignment-operators","Compound Assignment Operators — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch02-variables-and-types\u002F2.5-compound-assignment-operators",{"path":462,"title":463,"stem":464},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch03-apis-libraries-and-documentation\u002F1-apis-and-libraries","APIs and Libraries — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch03-apis-libraries-and-documentation\u002F3.1-apis-and-libraries",{"path":466,"title":467,"stem":468},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch03-apis-libraries-and-documentation\u002F2-documentation-with-comments-and-preconditions","Documentation with Comments and Preconditions — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch03-apis-libraries-and-documentation\u002F3.2-documentation-with-comments-and-preconditions",{"path":470,"title":471,"stem":472},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch03-apis-libraries-and-documentation\u002F3-packages-and-imports","Packages & Imports — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch03-apis-libraries-and-documentation\u002F3.3-packages-and-imports",{"path":474,"title":475,"stem":476},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F1-methods-signatures-and-parameters","Methods, Signatures & Parameters — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F4.1-methods-signatures-and-parameters",{"path":478,"title":479,"stem":480},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F2-calling-class-methods","Calling Class Methods — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F4.2-calling-class-methods",{"path":482,"title":483,"stem":484},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F3-using-the-math-class","Using the Math Class — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F4.3-using-the-math-class",{"path":486,"title":487,"stem":488},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F4-objects-instances-of-classes","Objects — Instances of Classes — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F4.4-objects-instances-of-classes",{"path":490,"title":491,"stem":492},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F5-creating-and-initializing-objects-constructors","Creating & Initializing Objects: Constructors — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F4.5-creating-and-initializing-objects-constructors",{"path":494,"title":495,"stem":496},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F6-calling-instance-methods","Calling Instance Methods — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch04-using-objects-and-calling-methods\u002F4.6-calling-instance-methods",{"path":498,"title":499,"stem":500},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F1-5.2-if-statements-and-for-loops","if Statements & For Loops — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.1-5.2-if-statements-and-for-loops",{"path":502,"title":503,"stem":504},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F10-nested-iteration","Nested Iteration — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.10-nested-iteration",{"path":506,"title":507,"stem":508},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F11-informal-runtime-analysis-of-loops","Informal Runtime Analysis of Loops — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.11-informal-runtime-analysis-of-loops",{"path":510,"title":511,"stem":512},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F3-algorithms-with-selection-and-repetition","Algorithms with Selection and Repetition — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.3-algorithms-with-selection-and-repetition",{"path":514,"title":515,"stem":516},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F4-boolean-expressions","Boolean Expressions — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.4-boolean-expressions",{"path":518,"title":519,"stem":520},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5-nested-if-statements","Nested if Statements — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.5-nested-if-statements",{"path":522,"title":523,"stem":524},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F6-compound-boolean-expressions","Compound Boolean Expressions — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.6-compound-boolean-expressions",{"path":526,"title":527,"stem":528},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F7-comparing-boolean-expressions-de-morgans-laws","Comparing Boolean Expressions (De Morgan's Laws) — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.7-comparing-boolean-expressions-de-morgans-laws",{"path":530,"title":531,"stem":532},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F8-while-loops","While Loops — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.8-while-loops",{"path":534,"title":535,"stem":536},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F9-implementing-selection-and-iteration-algorithms","Implementing Selection and Iteration Algorithms — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch05-control-structures\u002F5.9-implementing-selection-and-iteration-algorithms",{"path":538,"title":539,"stem":540},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch06-strings\u002F1-strings","Strings — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch06-strings\u002F6.1-strings",{"path":542,"title":543,"stem":544},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch06-strings\u002F2-string-algorithms","String Algorithms — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch06-strings\u002F6.2-string-algorithms",{"path":546,"title":547,"stem":548},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F1-anatomy-of-a-java-class","Anatomy of a Java Class — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F7.1-anatomy-of-a-java-class",{"path":550,"title":551,"stem":552},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F2-methods-how-to-write-them","Methods: How to Write Them — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F7.2-methods-how-to-write-them",{"path":554,"title":555,"stem":556},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F3-methods-passing-and-returning-references-of-an-object","Methods: Passing & Returning References of an Object — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F7.3-methods-passing-and-returning-references-of-an-object",{"path":558,"title":559,"stem":560},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F4-class-static-variables-and-methods","Class (static) Variables & Methods — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch07-the-class-blueprint\u002F7.4-class-static-variables-and-methods",{"path":562,"title":563,"stem":564},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch08-constructors-and-this\u002F1-8.2-constructors-and-this","Constructors & \"this\" — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch08-constructors-and-this\u002F8.1-8.2-constructors-and-this",{"path":566,"title":567,"stem":568},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F1-array-creation-and-access","Array Creation and Access — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.1-array-creation-and-access",{"path":570,"title":571,"stem":572},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F2-arraylist-and-its-methods","ArrayList and its Methods — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.2-arraylist-and-its-methods",{"path":574,"title":575,"stem":576},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F3-optional-hashmap-dictionary-data-structure","Optional: HashMap (Dictionary) Data Structure — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure",{"path":578,"title":579,"stem":580},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F4-array-traversals","Array Traversals — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.4-array-traversals",{"path":582,"title":583,"stem":584},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F5-implementing-array-algorithms","Implementing Array Algorithms — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.5-implementing-array-algorithms",{"path":586,"title":587,"stem":588},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F6-arraylist-traversals","ArrayList Traversals — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.6-arraylist-traversals",{"path":590,"title":591,"stem":592},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F7-implementing-arraylist-algorithms","Implementing ArrayList Algorithms — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.7-implementing-arraylist-algorithms",{"path":594,"title":595,"stem":596},"\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F8-using-text-files","Using Text Files — Worked Example","shockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.8-using-text-files",[598,602,606,610,614,618,622,626,630,634,638,642,646,650,654,658,662,666,670,674,678,682,686,690,694,698,702,706,710,714,718,722,726,730,734,738,742,746,750,754],{"path":599,"title":600,"stem":601},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch01-why-java-for-frc\u002F2-intro-to-algorithms-programming-and-compilers","Intro to Algorithms, Programming & Compilers — Exercises","shockwave-curriculum\u002Fexercises\u002Fch01-why-java-for-frc\u002F1.2-intro-to-algorithms-programming-and-compilers",{"path":603,"title":604,"stem":605},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F1-variables-and-data-types","Variables & Data Types — Exercises","shockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F2.1-variables-and-data-types",{"path":607,"title":608,"stem":609},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F2-expressions-and-output","Expressions & Output — Exercises","shockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F2.2-expressions-and-output",{"path":611,"title":612,"stem":613},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F3-assignment-and-input","Assignment & Input — Exercises","shockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F2.3-assignment-and-input",{"path":615,"title":616,"stem":617},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F4-casting-and-ranges-of-values","Casting & Ranges of Values — Exercises","shockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F2.4-casting-and-ranges-of-values",{"path":619,"title":620,"stem":621},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F5-compound-assignment-operators","Compound Assignment Operators — Exercises","shockwave-curriculum\u002Fexercises\u002Fch02-variables-and-types\u002F2.5-compound-assignment-operators",{"path":623,"title":624,"stem":625},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch03-apis-libraries-and-documentation\u002F1-apis-and-libraries","APIs and Libraries — Exercises","shockwave-curriculum\u002Fexercises\u002Fch03-apis-libraries-and-documentation\u002F3.1-apis-and-libraries",{"path":627,"title":628,"stem":629},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch03-apis-libraries-and-documentation\u002F2-documentation-with-comments-and-preconditions","Documentation with Comments and Preconditions — Exercises","shockwave-curriculum\u002Fexercises\u002Fch03-apis-libraries-and-documentation\u002F3.2-documentation-with-comments-and-preconditions",{"path":631,"title":632,"stem":633},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch03-apis-libraries-and-documentation\u002F3-packages-and-imports","Packages & Imports — Exercises","shockwave-curriculum\u002Fexercises\u002Fch03-apis-libraries-and-documentation\u002F3.3-packages-and-imports",{"path":635,"title":636,"stem":637},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F1-methods-signatures-and-parameters","Methods, Signatures & Parameters — Exercises","shockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F4.1-methods-signatures-and-parameters",{"path":639,"title":640,"stem":641},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F2-calling-class-methods","Calling Class Methods — Exercises","shockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F4.2-calling-class-methods",{"path":643,"title":644,"stem":645},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F3-using-the-math-class","Using the Math Class — Exercises","shockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F4.3-using-the-math-class",{"path":647,"title":648,"stem":649},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F4-objects-instances-of-classes","Objects — Instances of Classes — Exercises","shockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F4.4-objects-instances-of-classes",{"path":651,"title":652,"stem":653},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F5-creating-and-initializing-objects-constructors","Creating & Initializing Objects: Constructors — Exercises","shockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F4.5-creating-and-initializing-objects-constructors",{"path":655,"title":656,"stem":657},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F6-calling-instance-methods","Calling Instance Methods — Exercises","shockwave-curriculum\u002Fexercises\u002Fch04-using-objects-and-calling-methods\u002F4.6-calling-instance-methods",{"path":659,"title":660,"stem":661},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F1-5.2-if-statements-and-for-loops","if Statements & For Loops — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.1-5.2-if-statements-and-for-loops",{"path":663,"title":664,"stem":665},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F10-nested-iteration","Nested Iteration — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.10-nested-iteration",{"path":667,"title":668,"stem":669},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F11-informal-runtime-analysis-of-loops","Informal Runtime Analysis of Loops — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.11-informal-runtime-analysis-of-loops",{"path":671,"title":672,"stem":673},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F3-algorithms-with-selection-and-repetition","Algorithms with Selection and Repetition — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.3-algorithms-with-selection-and-repetition",{"path":675,"title":676,"stem":677},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F4-boolean-expressions","Boolean Expressions — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.4-boolean-expressions",{"path":679,"title":680,"stem":681},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5-nested-if-statements","Nested if Statements — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.5-nested-if-statements",{"path":683,"title":684,"stem":685},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F6-compound-boolean-expressions","Compound Boolean Expressions — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.6-compound-boolean-expressions",{"path":687,"title":688,"stem":689},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F7-comparing-boolean-expressions-de-morgans-laws","Comparing Boolean Expressions (De Morgan's Laws) — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.7-comparing-boolean-expressions-de-morgans-laws",{"path":691,"title":692,"stem":693},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F8-while-loops","While Loops — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.8-while-loops",{"path":695,"title":696,"stem":697},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F9-implementing-selection-and-iteration-algorithms","Implementing Selection and Iteration Algorithms — Exercises","shockwave-curriculum\u002Fexercises\u002Fch05-control-structures\u002F5.9-implementing-selection-and-iteration-algorithms",{"path":699,"title":700,"stem":701},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch06-strings\u002F1-strings","Strings — Exercises","shockwave-curriculum\u002Fexercises\u002Fch06-strings\u002F6.1-strings",{"path":703,"title":704,"stem":705},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch06-strings\u002F2-string-algorithms","String Algorithms — Exercises","shockwave-curriculum\u002Fexercises\u002Fch06-strings\u002F6.2-string-algorithms",{"path":707,"title":708,"stem":709},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F1-anatomy-of-a-java-class","Anatomy of a Java Class — Exercises","shockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F7.1-anatomy-of-a-java-class",{"path":711,"title":712,"stem":713},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F2-methods-how-to-write-them","Methods: How to Write Them — Exercises","shockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F7.2-methods-how-to-write-them",{"path":715,"title":716,"stem":717},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F3-methods-passing-and-returning-references-of-an-object","Methods: Passing & Returning References of an Object — Exercises","shockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F7.3-methods-passing-and-returning-references-of-an-object",{"path":719,"title":720,"stem":721},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F4-class-static-variables-and-methods","Class (static) Variables & Methods — Exercises","shockwave-curriculum\u002Fexercises\u002Fch07-the-class-blueprint\u002F7.4-class-static-variables-and-methods",{"path":723,"title":724,"stem":725},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch08-constructors-and-this\u002F1-8.2-constructors-and-this","Constructors & \"this\" — Exercises","shockwave-curriculum\u002Fexercises\u002Fch08-constructors-and-this\u002F8.1-8.2-constructors-and-this",{"path":727,"title":728,"stem":729},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F1-array-creation-and-access","Array Creation and Access — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.1-array-creation-and-access",{"path":731,"title":732,"stem":733},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F2-arraylist-and-its-methods","ArrayList and its Methods — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.2-arraylist-and-its-methods",{"path":735,"title":736,"stem":737},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F3-optional-hashmap-dictionary-data-structure","Optional: HashMap (Dictionary) Data Structure — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure",{"path":739,"title":740,"stem":741},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F4-array-traversals","Array Traversals — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.4-array-traversals",{"path":743,"title":744,"stem":745},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F5-implementing-array-algorithms","Implementing Array Algorithms — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.5-implementing-array-algorithms",{"path":747,"title":748,"stem":749},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F6-arraylist-traversals","ArrayList Traversals — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.6-arraylist-traversals",{"path":751,"title":752,"stem":753},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F7-implementing-arraylist-algorithms","Implementing ArrayList Algorithms — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.7-implementing-arraylist-algorithms",{"path":755,"title":756,"stem":757},"\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F8-using-text-files","Using Text Files — Exercises","shockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.8-using-text-files",{"id":759,"title":146,"body":760,"description":798,"extension":1026,"meta":1027,"navigation":814,"path":145,"seo":1030,"stem":147,"__hash__":1031},"lessons\u002Fshockwave-curriculum\u002Flessons\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure.md",{"type":761,"value":762,"toc":1019},"minimark",[763,767,772,792,845,855,859,869,889,893,903,933,937,972,976,1004,1015],[764,765,146],"h1",{"id":766},"optional-hashmap-dictionary-data-structure",[768,769,771],"h2",{"id":770},"key-value-pairs","Key-Value Pairs",[773,774,775,776,783,784,787,788,791],"p",{},"A ",[777,778,779],"strong",{},[780,781,782],"code",{},"HashMap"," stores pairs — each unique ",[777,785,786],{},"key"," maps to a ",[777,789,790],{},"value",", like a real dictionary mapping a word to its definition:",[793,794,799],"pre",{"className":795,"code":796,"language":797,"meta":798,"style":798},"language-java shiki shiki-themes github-light github-dark","import java.util.HashMap;\n\nHashMap\u003CInteger, Double> motorOffsets = new HashMap\u003CInteger, Double>();\nmotorOffsets.put(5, 0.02);   \u002F\u002F CAN ID 5's calibration offset is 0.02\nmotorOffsets.put(6, -0.01);\n\ndouble offset = motorOffsets.get(5); \u002F\u002F 0.02\n","java","",[780,800,801,809,816,822,828,834,839],{"__ignoreMap":798},[802,803,806],"span",{"class":804,"line":805},"line",1,[802,807,808],{},"import java.util.HashMap;\n",[802,810,812],{"class":804,"line":811},2,[802,813,815],{"emptyLinePlaceholder":814},true,"\n",[802,817,819],{"class":804,"line":818},3,[802,820,821],{},"HashMap\u003CInteger, Double> motorOffsets = new HashMap\u003CInteger, Double>();\n",[802,823,825],{"class":804,"line":824},4,[802,826,827],{},"motorOffsets.put(5, 0.02);   \u002F\u002F CAN ID 5's calibration offset is 0.02\n",[802,829,831],{"class":804,"line":830},5,[802,832,833],{},"motorOffsets.put(6, -0.01);\n",[802,835,837],{"class":804,"line":836},6,[802,838,815],{"emptyLinePlaceholder":814},[802,840,842],{"class":804,"line":841},7,[802,843,844],{},"double offset = motorOffsets.get(5); \u002F\u002F 0.02\n",[773,846,847,850,851,854],{},[780,848,849],{},"put(key, value)"," adds or replaces a pair; ",[780,852,853],{},"get(key)"," retrieves the value for a key.",[768,856,858],{"id":857},"when-to-reach-for-a-hashmap","When to Reach for a HashMap",[773,860,861,862,865,866,868],{},"Arrays and ",[780,863,864],{},"ArrayList"," are naturally indexed by position (0, 1, 2...). A ",[780,867,782],{}," is for when the natural \"index\" is something else entirely — a name, an ID number, a label — and you want to look values up by that instead of a position:",[793,870,872],{"className":795,"code":871,"language":797,"meta":798,"style":798},"HashMap\u003CString, String> subsystemStatus = new HashMap\u003CString, String>();\nsubsystemStatus.put(\"Intake\", \"Ready\");\nsubsystemStatus.put(\"Shooter\", \"Spinning Up\");\n",[780,873,874,879,884],{"__ignoreMap":798},[802,875,876],{"class":804,"line":805},[802,877,878],{},"HashMap\u003CString, String> subsystemStatus = new HashMap\u003CString, String>();\n",[802,880,881],{"class":804,"line":811},[802,882,883],{},"subsystemStatus.put(\"Intake\", \"Ready\");\n",[802,885,886],{"class":804,"line":818},[802,887,888],{},"subsystemStatus.put(\"Shooter\", \"Spinning Up\");\n",[768,890,892],{"id":891},"looping-through-every-pair","Looping Through Every Pair",[773,894,895,898,899,902],{},[780,896,897],{},"keySet()"," gives you every key, which you can then use with ",[780,900,901],{},"get()"," to reach each value:",[793,904,906],{"className":795,"code":905,"language":797,"meta":798,"style":798},"for (String name : subsystemStatus.keySet())\n{\n    String status = subsystemStatus.get(name);\n    System.out.println(name + \": \" + status);\n}\n",[780,907,908,913,918,923,928],{"__ignoreMap":798},[802,909,910],{"class":804,"line":805},[802,911,912],{},"for (String name : subsystemStatus.keySet())\n",[802,914,915],{"class":804,"line":811},[802,916,917],{},"{\n",[802,919,920],{"class":804,"line":818},[802,921,922],{},"    String status = subsystemStatus.get(name);\n",[802,924,925],{"class":804,"line":824},[802,926,927],{},"    System.out.println(name + \": \" + status);\n",[802,929,930],{"class":804,"line":830},[802,931,932],{},"}\n",[768,934,936],{"id":935},"common-pitfalls","Common Pitfalls",[938,939,940,956],"ul",{},[941,942,943,949,950,952,953,955],"li",{},[777,944,945,946,948],{},"Assuming a ",[780,947,782],{}," remembers insertion order."," Unlike ",[780,951,864],{},", it doesn't guarantee any particular order when you loop through ",[780,954,897],{},".",[941,957,958,967,968,971],{},[777,959,960,961,963,964,955],{},"Calling ",[780,962,901],{}," with a key that was never ",[780,965,966],{},"put()"," Returns ",[780,969,970],{},"null"," rather than throwing an error — check for that if a lookup might legitimately miss.",[768,973,975],{"id":974},"key-takeaways","Key Takeaways",[938,977,978,984,991,997],{},[941,979,775,980,983],{},[780,981,982],{},"HashMap\u003CKeyType, ValueType>"," stores unique keys mapped to values.",[941,985,986,850,988,990],{},[780,987,849],{},[780,989,853],{}," retrieves the value.",[941,992,993,994,996],{},"Reach for a ",[780,995,782],{}," when you naturally look things up by name\u002FID rather than by position.",[941,998,999,1001,1002,955],{},[780,1000,897],{}," gives every key, for looping through all pairs with ",[780,1003,901],{},[773,1005,1006,1007,1010,1011,1014],{},"Derived from ",[780,1008,1009],{},"csawesome-2026",": ",[780,1012,1013],{},"unit-4-data-collections\u002F4.60-optional-hashmap-dictionary-data-structure.md"," (CSA 4.60)",[1016,1017,1018],"style",{},"html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":798,"searchDepth":811,"depth":811,"links":1020},[1021,1022,1023,1024,1025],{"id":770,"depth":811,"text":771},{"id":857,"depth":811,"text":858},{"id":891,"depth":811,"text":892},{"id":935,"depth":811,"text":936},{"id":974,"depth":811,"text":975},"md",{"outlineRef":1028,"status":1029},"9.3 — Optional: HashMap (Dictionary) Data Structure (CSA 4.60)","new — authored lesson (fuller depth than the teaser slide). See 9.1's note on why this combined-slide topic gets its own separate Lesson. Not on the AP CSA exam, but genuinely useful and common in real code.",{"title":146,"description":798},"9P2hlYnVmAE7pevLC-Hr4nzHvzS-DhTX9bPIdyMu3WY",{"id":1033,"title":575,"body":1034,"description":798,"extension":1026,"meta":1292,"navigation":814,"path":574,"seo":1295,"stem":576,"__hash__":1296},"examples\u002Fshockwave-curriculum\u002Fexamples\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure.md",{"type":761,"value":1035,"toc":1282},[1036,1039,1043,1046,1050,1065,1069,1083,1101,1105,1110,1130,1134,1139,1154,1158,1168,1183,1189,1193,1200,1228,1240,1244,1280],[764,1037,575],{"id":1038},"optional-hashmap-dictionary-data-structure-worked-example",[768,1040,1042],{"id":1041},"problem","Problem",[773,1044,1045],{},"Store a one-line scouting note for each opposing team you've scouted so far, keyed by team number, then look one up right before a match and print every note you have collected.",[768,1047,1049],{"id":1048},"step-1-plan-it-first","Step 1: Plan It First",[1051,1052,1053,1056,1059,1062],"ol",{},[941,1054,1055],{},"Store each team's scouting note, looked up by team number.",[941,1057,1058],{},"Look up one team's note before facing them.",[941,1060,1061],{},"Handle looking up a team that was never scouted.",[941,1063,1064],{},"Print every note collected so far.",[768,1066,1068],{"id":1067},"step-2-why-not-an-array-or-arraylist-here","Step 2: Why Not an Array or ArrayList Here",[773,1070,861,1071,1073,1074,1076,1077,1079,1080,1082],{},[780,1072,864],{}," are naturally indexed by position (0, 1, 2...). Here, the natural \"index\" is a team number — not a position — so a ",[780,1075,782],{}," fits: it maps each ",[777,1078,786],{}," (team number) to a ",[777,1081,790],{}," (the note).",[793,1084,1086],{"className":795,"code":1085,"language":797,"meta":798,"style":798},"import java.util.HashMap;\n\nHashMap\u003CInteger, String> scoutingNotes = new HashMap\u003CInteger, String>();\n",[780,1087,1088,1092,1096],{"__ignoreMap":798},[802,1089,1090],{"class":804,"line":805},[802,1091,808],{},[802,1093,1094],{"class":804,"line":811},[802,1095,815],{"emptyLinePlaceholder":814},[802,1097,1098],{"class":804,"line":818},[802,1099,1100],{},"HashMap\u003CInteger, String> scoutingNotes = new HashMap\u003CInteger, String>();\n",[768,1102,1104],{"id":1103},"step-3-add-notes","Step 3: Add Notes",[773,1106,1107,1109],{},[780,1108,849],{}," adds a pair:",[793,1111,1113],{"className":795,"code":1112,"language":797,"meta":798,"style":798},"scoutingNotes.put(1622, \"Fast auto, weak endgame\");\nscoutingNotes.put(254, \"Consistent 3-piece, strong climb\");\nscoutingNotes.put(4414, \"New drivetrain this year, watch for reliability issues\");\n",[780,1114,1115,1120,1125],{"__ignoreMap":798},[802,1116,1117],{"class":804,"line":805},[802,1118,1119],{},"scoutingNotes.put(1622, \"Fast auto, weak endgame\");\n",[802,1121,1122],{"class":804,"line":811},[802,1123,1124],{},"scoutingNotes.put(254, \"Consistent 3-piece, strong climb\");\n",[802,1126,1127],{"class":804,"line":818},[802,1128,1129],{},"scoutingNotes.put(4414, \"New drivetrain this year, watch for reliability issues\");\n",[768,1131,1133],{"id":1132},"step-4-look-up-a-team-before-a-match","Step 4: Look Up a Team Before a Match",[773,1135,1136,1138],{},[780,1137,853],{}," retrieves the value for a key:",[793,1140,1142],{"className":795,"code":1141,"language":797,"meta":798,"style":798},"String note = scoutingNotes.get(254);\nSystem.out.println(note); \u002F\u002F Consistent 3-piece, strong climb\n",[780,1143,1144,1149],{"__ignoreMap":798},[802,1145,1146],{"class":804,"line":805},[802,1147,1148],{},"String note = scoutingNotes.get(254);\n",[802,1150,1151],{"class":804,"line":811},[802,1152,1153],{},"System.out.println(note); \u002F\u002F Consistent 3-piece, strong climb\n",[768,1155,1157],{"id":1156},"step-5-looking-up-a-team-never-scouted","Step 5: Looking Up a Team Never Scouted",[773,1159,960,1160,963,1162,1164,1165,1167],{},[780,1161,901],{},[780,1163,966],{}," doesn't throw an error — it returns ",[780,1166,970],{},":",[793,1169,1171],{"className":795,"code":1170,"language":797,"meta":798,"style":798},"String unknownNote = scoutingNotes.get(9999);\nSystem.out.println(unknownNote); \u002F\u002F null\n",[780,1172,1173,1178],{"__ignoreMap":798},[802,1174,1175],{"class":804,"line":805},[802,1176,1177],{},"String unknownNote = scoutingNotes.get(9999);\n",[802,1179,1180],{"class":804,"line":811},[802,1181,1182],{},"System.out.println(unknownNote); \u002F\u002F null\n",[773,1184,1185,1186,1188],{},"Code that looks up a team it might not have scouted yet should check for ",[780,1187,970],{}," before assuming there's a real note.",[768,1190,1192],{"id":1191},"step-6-print-every-note-collected","Step 6: Print Every Note Collected",[773,1194,1195,1197,1198,902],{},[780,1196,897],{}," gives every key, which can then be used with ",[780,1199,901],{},[793,1201,1203],{"className":795,"code":1202,"language":797,"meta":798,"style":798},"for (int teamNumber : scoutingNotes.keySet())\n{\n    String scoutedNote = scoutingNotes.get(teamNumber);\n    System.out.println(teamNumber + \": \" + scoutedNote);\n}\n",[780,1204,1205,1210,1214,1219,1224],{"__ignoreMap":798},[802,1206,1207],{"class":804,"line":805},[802,1208,1209],{},"for (int teamNumber : scoutingNotes.keySet())\n",[802,1211,1212],{"class":804,"line":811},[802,1213,917],{},[802,1215,1216],{"class":804,"line":818},[802,1217,1218],{},"    String scoutedNote = scoutingNotes.get(teamNumber);\n",[802,1220,1221],{"class":804,"line":824},[802,1222,1223],{},"    System.out.println(teamNumber + \": \" + scoutedNote);\n",[802,1225,1226],{"class":804,"line":830},[802,1227,932],{},[773,1229,1230,1231,1233,1234,1236,1237,1239],{},"This is guaranteed to print every team scouted so far — but not necessarily in the order they were ",[780,1232,966],{}," in, since ",[780,1235,782],{}," doesn't remember insertion order the way ",[780,1238,864],{}," does.",[768,1241,1243],{"id":1242},"recap","Recap",[938,1245,1246,1251,1257,1262,1273],{},[941,1247,775,1248,1250],{},[780,1249,982],{}," stores unique keys mapped to values — here, team numbers mapped to scouting notes.",[941,1252,1253,850,1255,990],{},[780,1254,849],{},[780,1256,853],{},[941,1258,993,1259,1261],{},[780,1260,782],{}," when you naturally look things up by name\u002FID (a team number) rather than by position.",[941,1263,1264,1266,1267,1269,1270,1272],{},[780,1265,901],{}," on a key that was never ",[780,1268,966],{}," returns ",[780,1271,970],{}," instead of throwing an error.",[941,1274,1275,1001,1277,1279],{},[780,1276,897],{},[780,1278,901],{}," — but in no guaranteed order.",[1016,1281,1018],{},{"title":798,"searchDepth":811,"depth":811,"links":1283},[1284,1285,1286,1287,1288,1289,1290,1291],{"id":1041,"depth":811,"text":1042},{"id":1048,"depth":811,"text":1049},{"id":1067,"depth":811,"text":1068},{"id":1103,"depth":811,"text":1104},{"id":1132,"depth":811,"text":1133},{"id":1156,"depth":811,"text":1157},{"id":1191,"depth":811,"text":1192},{"id":1242,"depth":811,"text":1243},{"outlineRef":1028,"pairsWith":1293,"status":1294},"[`lessons\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure.md`](..\u002F..\u002Flessons\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure.md)","new — authored worked example (fully solved, walked step by step — not a problem to attempt)",{"title":575,"description":798},"RpXCpr42lvYNkPDL0k1YfByLGkngbJftcXFpHqZ_Uks",{"id":1298,"title":736,"body":1299,"description":798,"extension":1026,"meta":1638,"navigation":814,"path":735,"seo":1640,"stem":737,"__hash__":1641},"exercises\u002Fshockwave-curriculum\u002Fexercises\u002Fch09-storing-data\u002F9.3-optional-hashmap-dictionary-data-structure.md",{"type":761,"value":1300,"toc":1634},[1301,1304,1308,1314,1336,1343,1348,1375,1381,1398,1435,1439,1445,1448,1510,1515,1575,1632],[764,1302,736],{"id":1303},"optional-hashmap-dictionary-data-structure-exercises",[768,1305,1307],{"id":1306},"multiple-choice","Multiple Choice",[773,1309,1310,1313],{},[777,1311,1312],{},"Question:"," Given:",[793,1315,1317],{"className":795,"code":1316,"language":797,"meta":798,"style":798},"HashMap\u003CString, String> subsystemStatus = new HashMap\u003CString, String>();\nsubsystemStatus.put(\"Intake\", \"Ready\");\n\nString status = subsystemStatus.get(\"Climber\");\n",[780,1318,1319,1323,1327,1331],{"__ignoreMap":798},[802,1320,1321],{"class":804,"line":805},[802,1322,878],{},[802,1324,1325],{"class":804,"line":811},[802,1326,883],{},[802,1328,1329],{"class":804,"line":818},[802,1330,815],{"emptyLinePlaceholder":814},[802,1332,1333],{"class":804,"line":824},[802,1334,1335],{},"String status = subsystemStatus.get(\"Climber\");\n",[773,1337,1338,1339,1342],{},"What is the value of ",[780,1340,1341],{},"status"," after this code runs?",[773,1344,1345],{},[777,1346,1347],{},"Options:",[938,1349,1350,1355,1362,1368],{},[941,1351,1352,1353],{},"A. ",[780,1354,970],{},[941,1356,1357,1358,1361],{},"B. ",[780,1359,1360],{},"\"\""," (an empty string)",[941,1363,1364,1365],{},"C. Throws a ",[780,1366,1367],{},"NullPointerException",[941,1369,1370,1371,1374],{},"D. ",[780,1372,1373],{},"\"Ready\"",", since it's the only value in the map",[773,1376,1377,1380],{},[777,1378,1379],{},"Answer:"," A",[773,1382,1383,1386,1387,1266,1389,1269,1391,1393,1394,1397],{},[777,1384,1385],{},"Why:"," ",[780,1388,901],{},[780,1390,966],{},[780,1392,970],{}," rather than throwing an error — ",[780,1395,1396],{},"\"Climber\""," was never added to the map, so there's no value to return.",[938,1399,1400,1414,1426],{},[941,1401,1402,1403,1405,1406,1408,1409,1411,1412,955],{},"B is wrong — ",[780,1404,970],{}," and an empty string are different things; ",[780,1407,901],{}," specifically returns ",[780,1410,970],{},", not ",[780,1413,1360],{},[941,1415,1416,1417,1419,1420,1422,1423,1425],{},"C is wrong — ",[780,1418,901],{}," with a missing key does not throw; a ",[780,1421,1367],{}," risk only shows up later, if the ",[780,1424,970],{}," result is used without checking.",[941,1427,1428,1429,1431,1432,1434],{},"D is wrong — ",[780,1430,901],{}," looks up the value for the exact key given (",[780,1433,1396],{},"); it doesn't fall back to some other entry just because the map only has one so far.",[768,1436,1438],{"id":1437},"micro-parsons","Micro-Parsons",[773,1440,1441,1444],{},[777,1442,1443],{},"Problem:"," These lines, once correctly ordered, form a complete program that stores one subsystem's status in a HashMap, then looks up and prints that same status.",[773,1446,1447],{},"Reorder the fragments below into a working program:",[938,1449,1450,1456,1462,1468,1474,1480,1486,1492,1498,1504],{},[941,1451,1452,1453],{},"a. ",[780,1454,1455],{},"        System.out.println(subsystemStatus.get(\"Shooter\"));",[941,1457,1458,1459],{},"b. ",[780,1460,1461],{},"public class SubsystemCheck",[941,1463,1464,1465],{},"c. ",[780,1466,1467],{},"    }",[941,1469,1470,1471],{},"d. ",[780,1472,1473],{},"{",[941,1475,1476,1477],{},"e. ",[780,1478,1479],{},"    public static void main(String[] args)",[941,1481,1482,1483],{},"f. ",[780,1484,1485],{},"}",[941,1487,1488,1489],{},"g. ",[780,1490,1491],{},"    {",[941,1493,1494,1495],{},"h. ",[780,1496,1497],{},"        HashMap\u003CString, String> subsystemStatus = new HashMap\u003CString, String>();",[941,1499,1500,1501],{},"i. ",[780,1502,1503],{},"        subsystemStatus.put(\"Shooter\", \"Spinning Up\");",[941,1505,1506,1507],{},"j. ",[780,1508,1509],{},"import java.util.HashMap;",[773,1511,1512,1514],{},[777,1513,1379],{}," j, b, d, e, g, h, i, a, c, f",[793,1516,1518],{"className":795,"code":1517,"language":797,"meta":798,"style":798},"import java.util.HashMap;\n\npublic class SubsystemCheck\n{\n    public static void main(String[] args)\n    {\n        HashMap\u003CString, String> subsystemStatus = new HashMap\u003CString, String>();\n        subsystemStatus.put(\"Shooter\", \"Spinning Up\");\n        System.out.println(subsystemStatus.get(\"Shooter\"));\n    }\n}\n",[780,1519,1520,1524,1528,1533,1537,1542,1547,1552,1558,1564,1570],{"__ignoreMap":798},[802,1521,1522],{"class":804,"line":805},[802,1523,808],{},[802,1525,1526],{"class":804,"line":811},[802,1527,815],{"emptyLinePlaceholder":814},[802,1529,1530],{"class":804,"line":818},[802,1531,1532],{},"public class SubsystemCheck\n",[802,1534,1535],{"class":804,"line":824},[802,1536,917],{},[802,1538,1539],{"class":804,"line":830},[802,1540,1541],{},"    public static void main(String[] args)\n",[802,1543,1544],{"class":804,"line":836},[802,1545,1546],{},"    {\n",[802,1548,1549],{"class":804,"line":841},[802,1550,1551],{},"        HashMap\u003CString, String> subsystemStatus = new HashMap\u003CString, String>();\n",[802,1553,1555],{"class":804,"line":1554},8,[802,1556,1557],{},"        subsystemStatus.put(\"Shooter\", \"Spinning Up\");\n",[802,1559,1561],{"class":804,"line":1560},9,[802,1562,1563],{},"        System.out.println(subsystemStatus.get(\"Shooter\"));\n",[802,1565,1567],{"class":804,"line":1566},10,[802,1568,1569],{},"    }\n",[802,1571,1573],{"class":804,"line":1572},11,[802,1574,932],{},[773,1576,1577,1580,1581,1584,1585,1588,1589,1592,1593,1592,1596,1592,1599,1602,1603,1606,1607,1610,1611,1613,1614,1584,1616,1619,1620,1623,1624,1627,1628,1631],{},[777,1578,1579],{},"Why this order:"," The ",[780,1582,1583],{},"import"," (",[780,1586,1587],{},"j",") precedes the class, and the usual class\u002Fmain scaffolding (",[780,1590,1591],{},"b",", ",[780,1594,1595],{},"d",[780,1597,1598],{},"e",[780,1600,1601],{},"g",") follows. The map must be created (",[780,1604,1605],{},"h",") before any pair can be stored in it (",[780,1608,1609],{},"i","), and a key must be ",[780,1612,966],{}," before ",[780,1615,901],{},[780,1617,1618],{},"a",") can retrieve the value that was actually stored for it. The braces close in reverse: ",[780,1621,1622],{},"main","'s body (",[780,1625,1626],{},"c","), then the class's body (",[780,1629,1630],{},"f",").",[1016,1633,1018],{},{"title":798,"searchDepth":811,"depth":811,"links":1635},[1636,1637],{"id":1306,"depth":811,"text":1307},{"id":1437,"depth":811,"text":1438},{"outlineRef":1028,"pairsWith":1293,"status":1639},"new — authored exercises (Multiple Choice + Micro-Parsons)",{"title":736,"description":798},"e9XOK13voaTEnTJKB-Ug_taoqDRwIm7X-ZJ5qYThOyw",1790274944436]