Object-Oriented Programming in Java

92 lessons in Java

• Inheritance with extendsCode Quiz
• Static context errorCode Quiz
• NullPointerException from uninitialized referenceCode Quiz
• == vs equalsCode Quiz
• toString and default printingCode Quiz
• Method overriding in a subclassCode Quiz
• Defining a class with fields and methodsCode Quiz
• Creating an object with newCode Quiz
• Accessing fields and calling methodsCode Quiz
• Defining and calling a constructorCode Quiz
• Default vs explicit constructorCode Quiz
• The this keywordCode Quiz
• Instance vs local variablesCode Quiz
• Static vs instance membersCode Quiz
• Access modifiers on membersCode Quiz
• Getters and settersCode Quiz
• Method overloadingCode Quiz
• The super keywordCode Quiz
• The Four Pillars of OOPSlides / Video
• Interfaces as Contracts for BehaviorSlides / Video
• Abstraction and Abstract ClassesSlides / Video
• Polymorphism Basics in JavaSlides / Video
• Method Overriding in SubclassesSlides / Video
• Inheritance and the extends KeywordSlides / Video
• Getter and Setter MethodsSlides / Video
• Encapsulation with Access ModifiersSlides / Video
• The Dot Operator in JavaSlides / Video
• Default vs Parameterized ConstructorsSlides / Video
• Constructors for Initializing ObjectsSlides / Video
• Interfaces BasicsQuiz
• The super Keyword BasicsQuiz
• Instance vs Static MembersQuiz
• Object as Root ClassQuiz
• Inheritance and extendsQuiz
• What Is a Class in JavaQuiz
• What Is an Object in JavaQuiz
• Declaring Instance VariablesQuiz
• Declaring Methods in a ClassQuiz
• Creating Objects with newQuiz
• The Dot OperatorQuiz
• The this Keyword BasicsQuiz
• Constructors and Their PurposeQuiz
• Default vs Parameterized ConstructorsQuiz
• Four Pillars of OOPQuiz
• Encapsulation ConceptQuiz
• Access ModifiersQuiz
• Getters and SettersQuiz
• Polymorphism ConceptQuiz
• Method OverloadingQuiz
• Method OverridingQuiz
• Abstract Classes BasicsQuiz
• Abstraction ConceptQuiz
• Class vs Object DistinctionQuiz
• The 'this' Keyword in JavaSlides / Video
• Creating Objects with the new KeywordSlides / Video
• Methods Define Object BehaviorSlides / Video
• The this KeywordFlashcard
• Accessing Members with Dot OperatorFlashcard
• Static MembersFlashcard
• Static vs Instance MembersFlashcard
• The final KeywordFlashcard
• The super KeywordFlashcard
• Abstraction ConceptFlashcard
• InterfacesFlashcard
• The instanceof OperatorFlashcard
• Four Pillars of OOP OverviewFlashcard
• EncapsulationFlashcard
• Method OverridingFlashcard
• PolymorphismFlashcard
• Creating Objects with newFlashcard
• ConstructorsFlashcard
• Constructor OverloadingFlashcard
• Fields (Instance Variables)Flashcard
• Method OverloadingFlashcard
• Methods (Behavior)Flashcard
• Object Class as RootFlashcard
• Getters and SettersFlashcard
• The toString MethodFlashcard
• Package Declaration and OrganizationFlashcard
• Object References vs PrimitivesFlashcard
• What Is a ClassFlashcard
• What Is an ObjectFlashcard
• Inheritance and extendsFlashcard
• Class vs Object DistinctionFlashcard
• Default ConstructorFlashcard
• Access ModifiersFlashcard
• Abstract Classes and MethodsFlashcard
• Interface vs Abstract ClassFlashcard
• Fields Store Object StateSlides / Video
• Objects as Instances of ClassesSlides / Video
• Classes as Blueprints for ObjectsSlides / Video
• What Object-Oriented Programming IsSlides / Video