Question

很急的问题,java 高手帮忙啊!!!!

源程序如下 ：为什么我用Jbuilder2006 调试的时候会出现
no interface expected here at line (29:36);

这是为什么啊？高手帮帮我！！！
错误在哪儿? 应该怎么改正!!
还有这是不是Jbuilder2006 环境的问题????

package myframe;

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

public class myframe {
public static void main(String[] args) {
Frame f=new Frame();
f.setTitle("my web") ;
f.setSize(400,400) ;
f.setLocation(400,400) ;
f.setBackground(Color.BLUE ) ;
f.setLayout(new GridLayout(3,2));
Button btn1=new Button("north");
Button btn2=new Button("south");
Button btn3=new Button("west");
Button btn4=new Button("east");
Button btn5=new Button("center");
f.add(btn1);
f.add(btn2);
f.add(btn3);
f.add(btn4);
f.add(btn5);
f.setVisible(true);

}
}
class MywindowListener extends WindowListener {
void windowOpened(WindowEvent e)
{

}
void windowClosing(WindowEvent e)
{

}
void windowClosed(WindowEvent e)
{

}
void windowIconified(WindowEvent e)
{

}
void windowDeiconified(WindowEvent e)
{

}
void windowDeactivated(WindowEvent e)
{

}

}

Answer 1

缺少引用的借口```
看看WindowListener 类```