事件处理

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

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class MyFrame extends JFrame {
	JFrame f;
	JButton b;
	JPanel p;
	public MyFrame(){
		f=new JFrame();
		f.setTitle("事件处理");
		f.setSize(300,300);
		p=new JPanel();
		p.setLayout(null);
		f.add(p);
		b=new JButton();
		b.setText("点我！！");
		p.add(b);
		b.setBounds(100, 50, 100, 50);
		b.setBackground(Color.green);
		b.addActionListener(new bAction());
		f.setVisible(true);
	}
		class bAction implements ActionListener{
			@Override
			public void actionPerformed(ActionEvent e) {
				b.setText("我被点击了");	
				b.setBackground(Color.gray);
			}		
}			
		public static void main(String[] args) {
				
			new MyFrame();
	}
}