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Thread Ques

Swati Gupta
Ranch Hand

Joined: May 28, 2002
Posts: 106
From Jqplus

What will be the effect of interrupt() method here.
The answer says it will run forever.
I thought due to interrupt() the flag will set to true.
I am really doing very bad in thread ques in mock exams.
[ June 11, 2002: Message edited by: swati gupta ]
Abhijeet Gholkar
Greenhorn

Joined: Jun 11, 2002
Posts: 25
class A extends Thread
{
public void run()
{
System.out.println("Starting loop");
while(true)
{
if(isInterrupted())
{
System.out.println("Interrupting");
break;
}
}
}
}
public class TestClass
{
public static void main(String args[]) throws Exception
{
A a = new A();
a.start();
Thread.sleep(1000);
a.interrupt();
}
}
Try this code to putoff the thread
Bonnie Beach-Morin
Greenhorn

Joined: Jun 13, 2002
Posts: 13
If your looking for a reason as to why it will run forever, it's because the interrupted() method doesn't actually do anything other than set a flag variable. The run method of class A never bothers to check the interrupted flag, so it doesn't know it should stop and runs forever.
Another solution would be to do the following


SJCP2
 
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subject: Thread Ques