简单问题：ImageIcon类！在线等待，通过就给分。

[binbin2000]

我用了一句：Icon pic=new ImageIcon("006.gif");
提示我：cannot resolve symbol
symbol:Class ImageIcon;
location:class my81.MouseLis
pic=new ImageIcon("006.gif");

[binbin2000]

把所有程序都帖出来算了。下面有21个错误，晕倒。
import java.awt.*;
import java.awt.event.*;
import java.swing.*;
public class my81 extends JFrame
{
Icon pic=new ImageIcon();
JButton button1=new JButton("little new");
JButton button2=new JButton("starball");
JButton button3=new JButton("bbs");
public static void main(String args[])
{
my81 frame1=new my81();
frame1.setTitle("choice the picture");
frame1.setSize(600,150);
frame1.setVisible(true);
};
public my81()
{
getContentPane().setLayout(new FlowLayout());
button1.addMouseListener(new MouseLis(1));
button2.addMouseListener(new MouseLis(2));
button3.addMouseListener(new MouseLis(3));
getContentPane().add(button1);
getContentPane().add(button2);
getContentPane().add(button3);
}
class MouseLis extends MouseAdapter
{
int select;
public MouseLis(int select)
{
this.select=select;
}
public void mouseClicked(MouseEvent e)
{
if(select==1)
{
pic new ImageIcon("006.gif");
button1.setIcon(pic);
}
if(select==2)
{
pic=new ImageIcon("007.gif");
button2.setIcon(pic);
}
if(select==3)
{
pic=new ImageIcon("008.gif");
button3.setIcon(pic);
}
}
}
}

[soldier1002]

add this:
import javax.swing.*;

[soldier1002]

should be javax.swing, not java.swing.