Threading in Java

[kfcnhl]

I have implemented threading using inheritance of Thread class and runnable class.
Currently I have four cores in my CPU, but only one seems to be busy even if I open up 10+ threads.
Although the speed is much faster.

Does anybody know why?

[doWhile]

You've provided little information. For instance, we don't know how you are creating and starting the threads.

using inheritance of Thread class and runnable class.

Runnable is an interface, not a class. Again no information, but based upon the above sentence my .02: do not use inheritance - implement Runnable and pass this to a Thread object.

[kfcnhl]

I just love how people pick up the insignificant details. Typical computer scientist.

My class implements runnable so it have run() method.
I then create thread using the runnable interface.

I have seen that IO can be an issue.
But I am only outputing with system.out.println.

Not sure if that have any effect.
Let me know if there are any other potential factors, otherwise my code looks similar the below.

class BasicThread2 implements Runnable {
// This method is called when the thread runs
public void run() {
}
}

// Create the object with the run() method
Runnable runnable = new BasicThread2();

// Create the thread supplying it with the runnable object
Thread thread = new Thread(runnable);

// Start the thread
thread.start();

[doWhile]

I just love how people pick up the insignificant details. Typical computer scientist.

And I just love how people disregard advice as insignificant...means that's one less post I will spend my time answering.

[kfcnhl]

Somebody on another forum just relied that XP, the OS I am using, does not allocate more than one CPU for a process.

That is stupid.............
Any workaround?

[Norm]

Upgrade your OS.