heartbeat

> If I want a program to spawn a thread every few

> minutes, can I

> do something like this?:

>

> for (;;){

> HeartBeat b = new HeartBeat();

> b.start();

> sleep(100);

> }

>

> The class HeartBeat extents Thread.

Well, you do not start an object, you start a thread within an object. It would be more like:

Heartbeat heartbeat = new Heartbeat();

while( true ) {

Thread thread = new Thread( heartbeat );

thread.start();

.... sleep

}

Or if you need you can define a new Heartbeat everytime, and have the Heartbeat constructor starts its own thread automatically everytime:

while( true ) {

Heartbeat heartbeat = new Heartbeat();

....sleep;

}

class Heartbeat implements Runnable {

public Heartbeat(){

Thread myThread = new Thread( this );

myThread.start();

}

public void run() {

... Do stuff ...

}

}

Just a note, if you sleep(100) you'll have 10 thread a second created, and a mess (unless it's your own sleep method...).

Regards,

JFC

jfcusson at 2007-7-2 1:57:52 >

> > The class HeartBeat extents Thread.

>

> Well, you do not start an object, you start a thread

> within an object.

You start threads. Threads can be created either by extending Thread (as HeartBeat does) or by giving a Runnable object as a parameter in a suitable constructor of Thread.

E.g.class MyClass extends Thread {

...

}

MyClass t=new MyClass();

t.start();

or

class MyClass implements Runnable {

...

}

Thread t=new Thread(new MyClass());

t.start();

- Marcus

msundman at 2007-7-2 1:57:52 >