Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

The more familiar you are with Object and its methods, the more you can do with your Java programs.

Developers who create a runnable Java class, be it for a ‘Hello World’ demonstration or to kick off a fully featured enterprise application, will enjoy the following technical benefits when using ...

The correct way to convert a String to long in Java is with the parseLong method of the wrapper class. The constructor conversion approach is deprecated! Use parseLong instead.