a question on multithreading

[Ajit Amitav Das]

Hi Ranchers .

If i am having 5 threads in a program and 2 are dameon threads and rest 3 are user threads , if either one of them throw a unhandled exception let it be user thread , will all of my threads will stop running or that particular thread will stop running allowing other threads run safely.

[Rohit Suman]

hi
the answer to your question is that it won't affect the other thread and only the current thread will throw the exception and since the exception is not handeled it will terminate. hope this solves yours doubt
rohit suman

[Aniket Patil]

    
class Job implements Runnable
{
   public void run()
   {
      for (int i=5;i>=0;i--)
      {
         System.out.println("i is "+i+", i/i is "+i/i);
      }
   }
}
 
class ThreadDemo1
{
 
   public static void main(String[] args)
   {
      
      int i;
 
      for(i = 0;i<20;i++)
      {
         System.out.println("In main, i is "+i);
      }
      new Thread(new Job()).start();  
      for(i = 0;i<50;i++)
      {
         System.out.println("In main, i is "+i);
      }
   }
} 
 

The output (actually, a snapshot of it):

In main, i is 16
In main, i is 17
In main, i is 18
In main, i is 19
In main, i is 0
In main, i is 1
In main, i is 2
In main, i is 3
In main, i is 4
i is 5, i/i is 1
i is 4, i/i is 1
i is 3, i/i is 1
i is 2, i/i is 1
i is 1, i/i is 1
Exception in thread "Thread-0" java.lang.ArithmeticException: / by zero
at Job.run(ThreadDemo1.java:7)
at java.lang.Thread.run(Unknown Source)
In main, i is 5
In main, i is 6
In main, i is 7
In main, i is 8
In main, i is 9
In main, i is 10
In main, i is 11
In main, i is 12
In main, i is 13

Does that answer your question?
[ September 12, 2006: Message edited by: Aniket Patil ]

[Ajit Amitav Das]

Thanks Aniket for a fine example .i got cleared my doubt.