Inside XML

Creating Java Classes

We've already seen how to create classes in a rudimentary way: You need to create a class to do anything at all, as when we created the main class for the applications that we've built:

public class app
{
    public static void main(String[] args)
    {
        System.out.println("Welcome to Java");
    }
}

In preparation for the next chapter, let's take a look at a more advanced example. In this case, I'll create a new class named AppFrame based on the Java Frame class, which is what you use to create frame windows (a frame window has a frame, including a border and title bar) in Java. There are two ways to work with graphics in Java: the Abstract Windowing Toolkit (AWT) and the Swing Java packages. In the interests of space, I'm going to ...