Java开发网 - 求助：java图形界面的问题

Topic: 求助：java图形界面的问题

1.求助：java图形界面的问题

Posted by: turing514
Posted on: 2006-07-27 14:00

package map;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
/**
* Title: 
*
* Description: 
*
* Copyright: Copyright Coffee

2006
*
* Company: 
*
* @author not attributable
* @version 1.0
*/
public class test extends JFrame {
public test() {
super("Map");
setSize(500,500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MapPane map1=new MapPane();
Container content =(JPanel)getContentPane();
content.add(map1);
}

public static void main(String[] args) {
test Frame = new test();
Frame.show();
}
}
class MapPane extends JFrame{
public void paintComponent(Graphics comp){
Graphics comp2D =(Graphics2D)comp;
comp2D.drawString("haiwang",100,100);
}
}
编译是老出现错误（本程序是21天学通java的现成的程序）：
java.lang.IllegalArgumentException: adding a window to a container
at java.awt.Container.addImpl(Container.java:616)
at java.awt.Container.add(Container.java:307)
at map.test.<init>(test.java:24)
at map.test.main(test.java:28)
Exception in thread "main"
各个大虾给说说为什么？

2.Re:求助：java图形界面的问题 [Re: turing514]	Copy to clipboard
Posted by: turing514 Posted on: 2006-07-27 15:19 怎么没有人来问答问题阿

3.Re:求助：java图形界面的问题 [Re: turing514]	Copy to clipboard
Posted by: xintao222 Posted on: 2006-08-06 14:38 class MapPane extends JFrame{ public void paintComponent(Graphics comp){ Graphics comp2D =(Graphics2D)comp; comp2D.drawString("haiwang",100,100); } 将extends JFrame改为extends JPanel就没问题了

4.Re:求助：java图形界面的问题 [Re: turing514]	Copy to clipboard
Posted by: why Posted on: 2006-08-06 21:10 turing514 wrote: 怎么没有人来问答问题阿才不過一個小時多沒有耐性請自便......

5.Re:求助：java图形界面的问题 [Re: turing514]	Copy to clipboard
Posted by: yinzhun Posted on: 2006-08-11 14:57 上上楼的说的对只要将extends JFrame改为extends JPanel就没问题了如果你写JFrame 在把它加到Container 当然要错了