import java.awt.*;
import java.io.*;
import java.util.*;
import javax.swing.*;

public class ThreadTester extends JApplet implements Runnable {
  private JTextArea textArea = new JTextArea();
  private Thread thread = new Thread(this);

  public void init() {
    JScrollPane scrollPane = new JScrollPane(textArea);
    scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
    getContentPane().add(scrollPane, BorderLayout.CENTER);

    thread.start();
  }

  public void run() {
    System.out.println("\nCreating and starting thread 1\n");
    textArea.append("Creating and starting thread 1\n\n");
    textArea.setCaretPosition(textArea.getText().length());
    T1 t1 = new T1(textArea);

    try { Thread.sleep(5000); } catch(InterruptedException ie) {}
    System.out.println("\nCreating and starting thread 2\n");
    textArea.append("\nCreating and starting thread 2\n\n");
    textArea.setCaretPosition(textArea.getText().length());
    T2 t2 = new T2(textArea);

    try { Thread.sleep(5000); } catch(InterruptedException ie) {}
    System.out.println("\nKilling thread 1\n");
    textArea.append("\nKilling thread 1\n\n");
    textArea.setCaretPosition(textArea.getText().length());
    t1.kill();

    try { Thread.sleep(5000); } catch(InterruptedException ie) {}
    System.out.println("\nKilling thread 2\n");
    textArea.append("\nKilling thread 2\n\n");
    textArea.setCaretPosition(textArea.getText().length());
    t2.kill();
  }
}

class T1 extends Thread {
  private boolean alive = true;
  private JTextArea textArea;

  public T1(JTextArea textArea) {
    this.textArea = textArea;
    start();
  }

  public void run() {
    while(alive) {
      System.out.println("Thread 1");
      textArea.append("Thread 1\n");
      textArea.setCaretPosition(textArea.getText().length());
      try { sleep(1000); } catch(InterruptedException ie) {}
    }
  }

  public void kill() {
    alive = false;
  }
}

class T2 implements Runnable {
  private Thread t = new Thread(this);
  private boolean alive = true;
  private JTextArea textArea;

  public T2(JTextArea textArea) {
    this.textArea = textArea;
    t.start();
  }

  public void run() {
    while(alive) {
      System.out.println("Thread 2");
      textArea.append("Thread 2\n");
      textArea.setCaretPosition(textArea.getText().length());
      try { t.sleep(1000); } catch(InterruptedException ie) {}
    }
  }

  public void kill() {
    alive = false;
  }
}