Learn Java OOPs

Object means a real word entity

Java OOPs Concepts

Java OOPs Concepts open linkNaming ConventionObject and ClassConstructorstatic keyword this keywordInheritance(IS-A)Aggregation(HAS-A)Method OverloadingMethod OverridingCovariant Return Typesuper keywordInstance Initializer blockfinal keywordRuntime PolymorphismDynamic Bindinginstanceof operatorAbstract classInterfaceAbstract vs InterfacePackageAccess ModifiersEncapsulationObject class Object CloningJava ArrayWrapper classJava RecursionCall By Value strictfp keywordjavadoc toolCommand Line ArgObject vs ClassOverloading vs Overriding