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 ...

What is the contract between equals() and hashcode()? Learn how these methods work together when comparing objects in Java.

This post explains how to call a method in Java. Learn how to define methods, call them from other classes, and pass arguments!

In Java, objects are passed by reference, and all methods are virtual, so object slicing will not occur inadvertently. Even if you upcast an object, its real type is not forgotten, that's the ...

//Instantiation: Object item = classObj.newInstance (); </pre> <BR><BR>So I have new instance object and a Method ArrayList which contains the names of the methods in the Class.