CODEWITHSUNDEEP
javamultithreading
menemenemu
menemenemu

Reputation: 209

How to use interrupt() in this context

If run() hasen't finished and is recalled from outside I need to finish the running shread first. 

public class EnvTime extends Thread {
    public void run() {
        long step = 2000 / benvelope1.length;
        while (!finished) {
            for (int i = 0; i < benvelope1.length; i++) {
                envOut = benvelope1[i];
                try {
                    Thread.sleep(step);
                } catch (InterruptedException benvelope1) {
                    benvelope1.printStackTrace();
                }
            }
        }
    }
}

So I call this code from another method with:

Env interpol;

interpol.interrupt(); //

interpol=new EnvTime();

interpol.start();

But this is not working...

Upvotes: 0

Views: 148

Answers (2)

SKi
SKi

Reputation: 8466

You should change finished somewhere in your code. Like this way:

        try {
            Thread.sleep(step);
        } catch (InterruptedException benvelope1) {
            finished = true;
            benvelope1.printStackTrace();
        }

Maybe you should also wait that the thread is really terminated before starting the new one. Use join:

interpol.interrupt(); 
interpol.join();
interpol=new EnvTime();
interpol.start();

Upvotes: 0

aioobe
aioobe

Reputation: 420991

It's not clear what you're trying to achieve, but by doing 

Env interpol;

interpol.interrupt(); //

you'd probably get a NullPointerException. If you want your code to reach the

} catch (InterruptedException benvelope1) {
    ...
}

you need to make sure the thread is in the try-block, specifically in the Thread.sleep method when you interrupt it.

In other words, you at least need to start the thread before interrupting it.

Upvotes: 1

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