corner.java

这是一个英文版的《Java程序设计与问题解决》现在好多大学都当成教材

import java.awt.*;
import javax.swing.*;
import javax.accessibility.*;

public class Corner extends JComponent
                    implements Accessible {

    public void paintComponent(Graphics g) {
        // Fill me with dirty brown/orange.
        g.setColor(new Color(230, 163, 4));
        g.fillRect(0, 0, getWidth(), getHeight());
    }

    public AccessibleContext getAccessibleContext() {
        if (accessibleContext == null) {
            accessibleContext = new AccessibleCorner();
        }
        return accessibleContext;
    }

    protected class AccessibleCorner extends AccessibleJComponent {
        //Inherit everything, override nothing.
    }
}