初学者,这个空怎么写呀
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseListener;
import java.beans.EventHandler;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class AdapterTest extends JFrame implements ActionListener{
int x,y;
String str;
JButton b;
JLabel l;
public AdapterTest(){
super("The Mouse Adapeter");
getContentPane().setLayout(new FlowLayout());
JPanel p=new JPanel();
l=new JLabel("Please click the window");
getContentPane().add(l);
b=new JButton("Quit");
b.addActionListener(this);
getContentPane().add(b);
ListenerClass listen=new ListenerClass();
b.addMouseListener(listen);
setSize(300,300);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
String s=e.getActionCommand();
if("Quit".equals(s)){
System.exit(0);
}
}
public static void main(String[] args){
AdapterTest f=new AdapterTest();
}
}
import java.awt.event.MouseAdapter;
import org.w3c.dom.Text;
import com.sun.glass.events.MouseEvent;
import com.sun.xml.internal.ws.server.sei.EndpointResponseMessageBuilder.DocLit;
public class ListenerClass extends MouseAdapter {
public void mouseClicked(MouseEvent me){
AdapterTest at= ;//获取事件源对象
at.l.setText("Mouse clicked at:"+me.getX()+","+me.getY());
}
}