Java JLayeredPane

本文概述

• JLayeredPane类声明
• Java JLayeredPane示例

JLayeredPane类用于增加摆动容器的深度。它用于为组件定位提供第三维, 并将深度范围划分为几个不同的层。

JLayeredPane类声明

public class JLayeredPane extends JComponent implements Accessible

常用的构造函数：

常用方法：

Java JLayeredPane示例

import javax.swing.*;
import java.awt.*;
public class LayeredPaneExample extends JFrame {
  public LayeredPaneExample() {
    super("LayeredPane Example");
    setSize(200, 200);
    JLayeredPane pane = getLayeredPane();
    //creating buttons
    JButton top = new JButton();
    top.setBackground(Color.white);
    top.setBounds(20, 20, 50, 50);
    JButton middle = new JButton();
    middle.setBackground(Color.red);
    middle.setBounds(40, 40, 50, 50);
    JButton bottom = new JButton();
    bottom.setBackground(Color.cyan);
    bottom.setBounds(60, 60, 50, 50);
    //adding buttons on pane
    pane.add(bottom, new Integer(1));
    pane.add(middle, new Integer(2));
    pane.add(top, new Integer(3));
  }
  public static void main(String[] args) {
	  LayeredPaneExample panel = new  LayeredPaneExample();
      panel.setVisible(true);
  }
}

输出：