import java.awt.*;
import java.applet.*;
import java.io.*;
import java.net.*;
import java.util.*;

public class z extends Applet {// implements Runnable {
  //Thread runner;
  Button button1, button2;
  Choice ch;
  Button clean;

  public void add(Component c, GridBagLayout gbl,
		   GridBagConstraints gbc, 
		   int x, int y, int w, int h) {
    gbc.gridx = x;
    gbc.gridy = y;
    gbc.gridwidth = w;
    gbc.gridheight = h;
    gbl.setConstraints(c,gbc);
    add(c);
  }


  public void init() {
    setFont(new Font("Helvetica", Font.PLAIN, 14));

    Panel p = new Panel();

    ch = new Choice();
    ch.addItem("111");
    ch.addItem("222");
    ch.addItem("333");
    ch.addItem("444");

    clean = new Button("Clean");

    add(ch);
    add(clean);
    //setLayout(new BorderLayout());
    
    this.resize(500,450);
    p.show();

  }

  public void cleanThis() {
    remove(ch);
    remove(clean);
    ch.select("111");
    add(ch);
    add(clean);

    //this.validate();

  }

  public boolean action(Event evt, Object obj) {
    String command = (String)obj;

    if (command.equals("Clean")) {
      cleanThis();
    }    


    return true;
  }


  public void start() {
    //    runner = new Thread(this);
    //runner.start();
  }
 
 
  public void stop() {
    //if (runner != null)
    //runner.stop();
  }
 
 
  public void run() {
 
  }

  /*
   public static void main(String[] args) {
       PetaSIM tester = new PetaSIM();
       tester.resize(800, 650);
//       tester.setSize(200, 100);

       tester.init();
       tester.show();
   }
   */


};