各位帮我看看这段程序，可以通过编译
但只出来一个字串test,那些textfield, label都没有出来
什么原因！！　先谢过了！

import java.applet.Applet;
import java.awt.*;
import java.lang.*;

public class MyApplet4 extends Applet
{  
   private TextField hostField;
    public void init()
      {   Panel hostPanel = new Panel();
          hostPanel.setLayout(new GridLayout(2, 1));
          hostPanel.add(new Label("Host"));
          hostField = new TextField("YourCompany.com"); 
                  // 由 读 者 填 其 邮 件 服 务 器IP
          hostPanel.add(hostField);

        }
   public void paint(Graphics g)
{
   g.drawString("test",30,30); 
}
}

public void init()
      {   Panel hostPanel = new Panel();
          hostPanel.setLayout(new GridLayout(2, 1));
          hostPanel.add(new Label("Host"));
          hostField = new TextField("YourCompany.com"); 
                  // 由 读 者 填 其 邮 件 服 务 器IP
          hostPanel.add(hostField);
          add(hostPanel);
          ~~~~~~~~~~~~~~~~加这一句
        }