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 ...

Referencing class fields When initializing a class field, it’s legal to initialize it to the value of a previously initialized class field. For example, Listing 3 initializes y to x ‘s value.

For example, a bad guy in a computer game might well be an object. This bad guy has variables (movement speed, health, sprites) and it has methods (shoot, move left, move right, explode).

Looking at our example, we see that we declared a new class called Animal that defines three methods: isAMammal, isCarnivorous, and getHello.

The Java serialization tutorial In this Java serialization example, we will use both the ObjectOutputStream and the ObjectInputStream to save and retrieve the state of a simple JavaBean. The POJO will ...

Java string object example In Java, a string is an object that represents a number of character values. Each letter in the string is a separate character value that makes up the Java string object.