Java开发网 - XXX should be declared abstract; it does not define windowOpened

Topic: XXX should be declared abstract; it does not define windowOpened

1.XXX should be declared abstract; it does not define windowOpened

Posted by: q_yuan
Posted on: 2004-11-04 10:15

高手帮我看一看这个程序！

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import java.awt.*;
import java.awt.event.*;
public class TestAddListener implements ActionListener,WindowListener{
Frame f;
Button b;
public void create(){
f=new Frame("测试");
b=new Button("PRESS");
b.addActionListener(this);
f.addWindowListener(this);
f.add(b,"North");
f.setSize(200,200);
f.setVisible(true);
}
public static void main(String[] args){
TestAddListener ta = new TestAddListener();
ta.create();
}
public void actionPerformed(ActionEvent e){
System.out.println("the Button is pressed!");
}
public void windowActivated(WindowEvent e){};
public void windowClosed(WindowEvent e){};
public void windowCloseing(WindowEvent e){System.exit(1);};
public void windowDeactivated(WindowEvent e){};
public void windowDeiconfied(WindowEvent e){};
public void windowIconified(WindowEvent e){};
public void windowOpen(WindowEvent e){};
}

在编译这个程序时总是编不过去。提示为： TestAddListener should be declared abstract; it does not define windowOpened(java.awt.event.WindowEvent) in TestAddListener
这是个定义要怎么添加？谢谢！

2.Re:XXX should be declared abstract; it does not define windowOpened [Re: q_yuan]	Copy to clipboard
Posted by: why Posted on: 2004-11-04 10:33 public void windowOpened(WindowEvent e){};

3.Re:XXX should be declared abstract; it does not define windowOpened [Re: q_yuan]	Copy to clipboard
Posted by: q_yuan Posted on: 2004-11-08 16:36 谢谢上面的楼主!