To followup on this bug, please contact ###@###.###

This one comes from a customer.
>From: ###@###.### (Robert Uomini)
BugReport applet gives buttons to start and stop a thread 'WaitThread'.
I've added a button to test the suggested workaround ( start+run ) as
well. The thread is a thread subclass that prints to stdout in
3-second intervals. Thread.start() does not cause the thread to become
active- this seems to happen only if run() is given, which causes some
strange I/O lockup.

_____Customer Report Begins_____
Bug: 2.0 Beta (JDK), Java

Severity: painful

Configuration: Sparc5, Solaris 2.4

Description of problem: stopped Threads do not get restarted unless run()
is called.

What happens: In the attached example, a thread is created which executes
a three-second wait in a loop. When the thread is stopped and restarted
via start(), the run() method fails to execute unless it is called
explicitly (try uncommenting the call to wait_thread.run() in the sample
code); in this case, run() gets called twice.
_____End Customer Report_____
 
_____ Begin Customer Code ( with minor SQE addition )_____
// BugReport.java
import java.awt.*;

public class BugReport extends Frame
  {
  Panel panel;

  Button button1;
  Button button2;
  Button button3;

  WaitThread wait_thread;

  int windowWidth = 300;
  int windowHeight = 150;

  public BugReport(String args[])
    {
    super("Bug Report");

    panel = new Panel();
    button1 = new Button("Stop thread");
    button2 = new Button("Start thread");
    button3 = new Button("Run thread");

    panel.add(button1);
    panel.add(button2);
    panel.add(button3);
    add("South", panel);

    wait_thread = new WaitThread(this);
    wait_thread.start();

    resize(windowWidth, windowHeight);
    pack();
    show();
    }

  public synchronized boolean action(Event evt, Object arg)
    {
    if (evt.id == Event.ACTION_EVENT)
      {
      if ("Stop thread".equals(evt.arg))
{
System.out.println("Stopping thread");
wait_thread.stop();
return true;
}
      if ("Start thread".equals(evt.arg))
{
System.out.println("Starting thread");
wait_thread.start();
// wait_thread.run();
return true;
}
// Run Thread button and functionality were added by J. Hagen
      if ("Run thread".equals(evt.arg))
{
System.out.println("Running thread");
wait_thread.start();
wait_thread.run();
return true;
}
      }
    return true;
    }

  public static void main(String args[])
    {
    new BugReport(args);
    }
  }


// WaitThread.java
import java.awt.*;

public class BugReport extends Frame
  {
  Panel panel;

  Button button1;
  Button button2;
  Button button3;

  WaitThread wait_thread;

  int windowWidth = 300;
  int windowHeight = 150;

  public BugReport(String args[])
    {
    super("Bug Report");

    panel = new Panel();
    button1 = new Button("Stop thread");
    button2 = new Button("Start thread");
    button3 = new Button("Run thread");

    panel.add(button1);
    panel.add(button2);
    panel.add(button3);
    add("South", panel);

    wait_thread = new WaitThread(this);
    wait_thread.start();

    resize(windowWidth, windowHeight);
    pack();
    show();
    }

  public synchronized boolean action(Event evt, Object arg)
    {
    if (evt.id == Event.ACTION_EVENT)
      {
      if ("Stop thread".equals(evt.arg))
{
System.out.println("Stopping thread");
wait_thread.stop();
return true;
}
      if ("Start thread".equals(evt.arg))
{
System.out.println("Starting thread");
wait_thread.start();
// wait_thread.run();
return true;
}
      if ("Run thread".equals(evt.arg))
{
System.out.println("Running thread");
wait_thread.start();
wait_thread.run();
return true;
}
      }
    return true;
    }

  public static void main(String args[])
    {
    new BugReport(args);
    }
  }

 public class WaitThread extends Thread
  {
  BugReport parent;

  public WaitThread(BugReport parent)
    {
    super();
    this.parent = parent;
    }

  public synchronized void run()
    {
    for(int i = 0; i >= 0; i++)
      {
      System.out.println("In WaitThread");
      try
{
wait(3000);
}
      catch (InterruptedException e);
      }
    }
  }