mywindow.java

java GUI使用实现的日历

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
/**
 * 改变窗体风格
 */
public class MyWindow extends JFrame {
	platform panel = new platform();

	public MyWindow() {
		getContentPane().add(panel);
		try {
			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (UnsupportedLookAndFeelException e) {
			e.printStackTrace();
		}
		SwingUtilities.updateComponentTreeUI(this);
		setBounds(120, 100, 300, 300);
		setVisible(true);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
	}

	public static void main(String[] args) {
		new MyWindow();
	}

	class platform extends JPanel {
		public platform() {
			UIManager.LookAndFeelInfo[] infos = UIManager
					.getInstalledLookAndFeels();
			for (int i = 0; i < infos.length; i++) {
				makeButton(infos[i].getName(), infos[i].getClassName());
			}
		}

		void makeButton(String name, final String platname) {
			JButton button = new JButton(name);
			add(button);
			button.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					try {
						UIManager.setLookAndFeel(platname);
						SwingUtilities.updateComponentTreeUI(platform.this);
					} catch (Exception ex) {
						ex.printStackTrace();
					}
				}
			});
		}
	}
}