// Abstract class needs to be extended and its method implemented. // It cannot be instantiated.

If a class is not completed due to some reason or the body(implementation) is not appropriate, then this partially implemented classes are declare as abstract. If we ...

Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields, ...

Due to Java’s Reflection API we have been able to inspect and alter program execution at runtime. In particular, we can observe interfaces/classes/methods and fields at runtime without knowing their ...