import java.awt.*;
import java.awt.event.* ;

public class TestButton{
    public static void main(String args[ ]){
		Frame f = new Frame("Test");
		 BorderLayout bl=new BorderLayout();
		 f.setLayout(bl);
        Label label=new Label("內容顯示");
		f.add(label,"Center");
		Button b = new Button("Press Me!");
		b.addActionListener(new ButtonHandler( )); //注冊點擊鼠標事件監(jiān)聽器。
		f.add(b,"South");//BorderLayout.SOUTH
		f.setSize(200,100);
		f.setVisible(true) ;
	}
 }

//定義ActionEvent監(jiān)聽器類
class ButtonHandler implements ActionListener{

    public void actionPerformed(ActionEvent e){
		System.out.println("Action occurred");
		System.out.println("Button's label is:"+
		                       e.getActionCommand());
		}
	}