为什么添加的图片没有显示?

求助:大家能帮我看下为什么图象显示不出来? label1.setIcon(icon1);这句没起作用.
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

public class GuessPrice extends WindowAdapter implements ActionListener
{ int c=150;
static TextField field1=new TextField(20);
static Button button1=new Button("确定");
static JLabel label1=new JLabel();
static ImageIcon icon1=new ImageIcon("1.jpg");
public static void main(String args[])
{

JFrame frame1=new JFrame("价格竞猜 ");

frame1.setLayout(new FlowLayou(FlowLayout.LEFT,400,50));

frame1.add(field1);

frame1.add(button1);
frame1.add(label1);
button1.addActionListener(new GuessPrice());
frame1.setSize(800,500);
frame1.setVisible(true);
}

public void actionPerformed(ActionEvent e)
{
if(Integer.parseInt(field1.getText())>c)