Is there a way to run two different threads indefinitely

Question

I have two different threads and they both are doing different tasks.... I want them to be running indefinitely....
i want the threads to run indefinetly passing the control between one another( anyway, passing the control is unpredicatable)
I dont want the tasks to be run in a infinite loop but the threads itself, which are doing their respective tasks.....

Answer 1

vinney_143 wrote:
anyway, with respect to what i understood, this is what i tried.............. i thought of calling the start() methods within a loop but it should be throwing illegalThreadStateException. so, i came to this forum to seek some help on this.
If i am gonna put the loop inside the threads, i dont think that serves my purposes of calling two threads indefinitely and not doing a task in each thread indefinitely........Threads have states: NEW, RUNNABLE, BLOCKED, WAITING, TERMINATED. When you create a thread (as an instance of thread) it is in NEW state. When you call start() on the thread instance it goes into RUNNABLE state. Process scheduler chooses a thread in runnable pool and runs it on the processor. When a thread goes to RUNNABLE etc states it can not go to NEW state (thats illegal). From a RUNNABLE state thread can only go to BLOCKED, WAITING or TERMINATED states. You can't call start() on the thread more than once. Once a thread is terminated (TERMINATED state) it can't go to NEW state either. Once start() is called the thread is started and you write logic that determines when the thread is terminated. Thats the reason why you got an IllegalThreadStateException.
while(true) {
    thread.start(); // throws IllegalThreadStateException
}Heres one way to keep thread running till a certain condition is met.
class MyThread extends Thread {
    public void run() {
        while(true) {
            boolean condition = //
            if(condition) {
                return; // terminates thread because run() returns
}Hope this helps.