博为峰Java技术文章 ——JavaSE Swing JLayeredPane面板

博为峰小博老师：

JLayeredPane面板主要是为JFC、Swing容器添加深度，它允许组件在必要的时候相互重叠。其实JLayeredPane面板将面板深度范围分成多个不同的层，将组件放入不同的层内，这样可以保证组件能够正确的重叠，而不必为具体的深度编号。

实例代码如下所示:

public class BWF extends JFrame implements ActionListener{

public static int WIDTH=400;

public static int HEIGHT=300;

public static JLayeredPane lp;

public static JButton button1;

public static JButton button2;

public BwfJButton() {

JFrame jf=new JFrame("博为峰教育");

jf.setSize(WIDTH, HEIGHT);

jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

lp=new JLayeredPane();

button1=new JButton("确定");

button2=new JButton("取消");

button1.addActionListener(this);

button2.addActionListener(this);

lp.add(button1,new Integer(200));

lp.add(button2,new Integer(300));

button1.setBounds(new Rectangle(100,100,100,100));

button1.setVisible(true);

button2.setBounds(new Rectangle(50,50,100,100));

button2.setVisible(true);

jf.setContentPane(lp);

jf.setVisible(true);

}

public static void main(String args[]){

new BwfJButton();

}

public void actionPerformed(ActionEvent e) {

if(e.getActionCommand().equals("确定")){

lp.setLayer(button1, 300);

lp.setLayer(button2, 200);

}else if(e.getActionCommand().equals("取消")){

lp.setLayer(button1, 200);

lp.setLayer(button2, 300);

}

}

}