Re-running a Thread

Hi all,
I have a problem with re-running a Thread. I try to reun a Thread via its start()-method. The first time everything works fine. The second time (after the Thread finishes his first execution) the run()-method is never invoked when calling start(). Is this a bug or is there no way to re-use a Thread. Do I have to construct a new Thread instead of re-using the old one?
Thanks for any hint, Mathias

You can only call start() once. When the thread exits its run method, then this thread is stopped and you cannot run it again.
Take a look at the SwingWorker example on how to reuse a thread. It works something like this:
public void run() {
while (running) {
// wait until a new task is received
// run the task
public void newTask(Runnable task) {
// notify the thread about this new task
public void stopThread() {
running = false;
// notify the thread in case it is sleeping
}

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How to run a thread for second time ?

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baskark wrote:
I have a written a ThreadPool, but I found that basically a thread is not running for the second time. i.e First i call run() method and call stop(). If i call again run() method for the same thread, it is not running. What should I do, If i want to run the thread for the second time ?
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String name;
NewThread(String a) {
name=a;
public void run() {
try{
for(int i=0;i<5;i++) {
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Thread.sleep(5);
catch (Exception e) {
e.printStackTrace();
class threadRunnableTest {
public static void main (String args[]) {
Runnable runnable=new NewThread("BaSkAr");
Thread thread = new Thread(runnable);
try{
System.out.println("First Thread is starting !!!");
thread.start();
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Thread.sleep(2000);
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thread.stop();
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e.printStackTrace();
It's usually helpful to check the documentation:
[http://java.sun.com/javase/6/docs/api/java/lang/Thread.html#start()|http://java.sun.com/javase/6/docs/api/java/lang/Thread.html#start()]
start
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Brian
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>
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code is hanging...
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vikram_p wrote:
I want to run two threads on two cores ???ok
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plz comment

not cleari meant ur that question was not clear.A transaction has a specific meaning in DBs. If multiple threads could possibly affect the same data, then you need to use transactions (and/or Java's syncing) to ensure they don't, or at least get a proper exception when they do.
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Re-running a Thread

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