Question

I have some runnable code that is executed through a thread.The thread is executed by multiple pieces of code how can I make sure there is only one thread that executes that runnable at a certain point.

I tried using a boolean value that is true on thread start and becomes false at thread end but that didn’t help.

Any ideas?

Answer 1

private class MyThread extends Thread
{
    private static Lock lock = new ReentrantLock();

    public void run()
    {
        if (MyThread.lock.tryLock())
        {
            try
            {
                // TODO something
            }
            finally
            {
                MyThread.lock.unlock();
            }
        }
    }
}