Java制作多风格的窗口实例

import java.awt.*; import java.awt.event.*; import javax.swing.*; //Download by http://www.codefans.net //显示多种风格的窗口 public class LookAndFeelDemo extends JFrame { public LookAndFeelDemo(){ super("多种风格的窗口"); //调用父类构造函数 Container container=getContentPane(); //得到容器 JMenu menuTheme=new JMenu("窗口风格"); //初始化菜单 JMenuItem itemNative=new JMenuItem("系统平台风格"); //初始化菜单项 JMenuItem itemMotif=new JMenuItem("Motif风格"); JMenuItem itemMetal=new JMenuItem("跨平台风格"); menuTheme.add(itemNative); //增加菜单项 menuTheme.add(itemMotif); menuTheme.add(itemMetal); itemNative.addActionListener(new ActionListener(){ //菜单项事件处理 public void actionPerformed(ActionEvent event){ changeLookAndFeel("Native"); //调用方法,改变窗口风格 } }); itemMotif.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent event){ changeLookAndFeel("Motif"); } }); itemMetal.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent event){ changeLookAndFeel("Metal"); } }); JMenuBar menuBar=new JMenuBar(); //初始化菜单栏 menuBar.add(menuTheme); //增加菜单到菜单栏 setJMenuBar(menuBar); //设置菜单 JPanel panel=new JPanel(); //初始化一个JPanel panel.setBorder(BorderFactory.createTitledBorder("组件样式")); //设置边界 panel.add(new JTextField("文本框：Look and feel测试 ")); //增加组件到panel上 panel.add(new JCheckBox("粗体")); panel.add(new JCheckBox("斜体")); panel.add(new JCheckBox("下划线")); panel.add(new JButton("确定")); panel.add(new JButton("退出")); container.add(panel); //增加panel到容器上 setSize(220,200); //设置窗口尺寸 setVisible(true); //设置窗口可见 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //关闭窗口时退出程序 } //改变窗口样式 public void changeLookAndFeel(String type){ try{ if (type.equals("Native")) { //判断来自于哪个菜单项 UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); //设置界面样式 } else if (type.equals("Motif")) { UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel"); } else if (type.equals("Metal")) {UIManager.setLookAndFeel( UIManager.getCrossPlatformLookAndFeelClassName()); } javax.swing.SwingUtilities.updateComponentTreeUI(this); //更新界面 } catch(Exception ex){ //捕捉错误 ex.printStackTrace(); //输出错误 } } public static void main(String[] args){ new LookAndFeelDemo(); } }