我是一个java初学者,这是我编的一个小程序,可是为什么编译不过去呀 ,请高手指点,在线等.
import java.awt.*;
import java.awt.event.*;
class MyFrame extends Frame implements WindowListener{
TextArea text;
MyFrame(String s){
super(s);
setBounds(100,100,200,300);
setVisible (true);
text = new TextArea();
add(text,BorderLayout.CENTER);
addWindowListener(this);
validate();
}
public void windowActivated(WindowEvent e){
text.append("\n 我被激活");
validate();
}
public void windowDeactivated(WindowEvent e){
text.append("\n我不是激活状态");
setBounds(0,0,400,400);
validate();
}
public void windowClosing(WindowEvent e){
text.append("\n窗口正在关闭");
dispose();
}
public void windowClosed(WindowEvent e){
System.out.println("\n程序结束运行");
System.exit(0);
}
public void windowconified(WindowEvent e){
text.append("\n我图标化了");
}
public void windowDeiconified(WindowEvent e){
text.append("\n我撤消图标化");
setBounds(0,0,400,400);
validate();
}
public void windowOpened(WindowEvent e){

}
}
class example{
public static void main (String[] args){
new MyFrame ("窗口");
}
}

import java.awt.*;
import java.awt.event.*;
class MyFrame extends Frame{
  TextArea text;
  MyFrame(String s){
    super(s);
    setBounds(100,100,200,300);
    setVisible (true);
    text = new TextArea();
    add(text,BorderLayout.CENTER);
    addWindowListener(new WindowAdapter(){
    public void windowActivated(WindowEvent e){
           text.append(\"\n 我被激活\");
           validate();
        }
        public void windowDeactivated(WindowEvent e){
           text.append(\"\n我不是激活状态\");
           setBounds(0,0,400,400);
           validate();
        }
        public void windowClosing(WindowEvent e){
           text.append(\"\n窗口正在关闭\");
           dispose();
        }
        public void windowClosed(WindowEvent e){
           System.out.println(\"\n程序结束运行\");
           System.exit(0);
        }
        public void windowconified(WindowEvent e){
           text.append(\"\n我图标化了\");
        }
        public void windowDeiconified(WindowEvent e){
           text.append(\"\n我撤消图标化\");
           setBounds(0,0,400,400);
           validate();
        }
        public void windowOpened(WindowEvent e){
  
        }
    });
    validate();
  }

}
public class example{
    public static void main (String[] args){
        new MyFrame (\"窗口\");
    }
}

回复的大哥你可以具体说明一下吗?
原程序存在的错误,和你更改的原因吗?

少实现了一个方法
应以example.java命名源文件

继承了WindowListener接口的话就要实现全部的方法，而你少了一个，我就用WindowAdapter代替了，可以不用实现全部方法，我把这个做成匿名类了~
他的main方法所在类并非是public的，所以文件名不必跟类名一致

i konw thank you