哪位高手看看什么问题?
明月撒 2005-03-20 08:25:59 package demo;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import demo.*;//WindowsCloser;
public class drawdemo extends JPanel{
public void drawdemo(Graphics g){
super.paintComponent(g);
g.setColor(setForeground(Color.black));
g.drawString("hi",10,20);
g.fillRect(10,25,30,20);
}
public static void main(String args[]){
JFrame frame=new JFrame("Drawing panel");
drawdemo panel=new drawdemo();
frame.getContentPane().add(panel);
frame.setSize(600,450);
frame.setVisible(true);
frame.addWindowListener(new WindowsCloser());
为何只看到frame而看不到panel中的内容?
}
}