Running 2 threads simultaneously

Question

In the case of an IM client. I have made 2 separate threads to handle sending packets (by std io) and receiving packets. The question is how to make these 2 threads run simultaneously so that I can keep prompting for input while at the same time be ready to receive packets at any time?

I have already tried setting a timer but the data is always lost receiving.

Answer 1

Without more details, it is hard to give a complete answer. Nevertheless, here is the code for starting two threads:

Thread thread1 = new Thread () {
  public void run () {
    // ... your code here
  }
};
Thread thread2 = new Thread () {
  public void run () {
    // ... your code here
  }
};
thread1.start();
thread2.start();

Answer 2

Well, they won't run simultaneously unless you have a multiprocessor computer, but that's not usually the issue. What will happen is that each thread will get a slice of time, more or less alternatively.

If you're losing I/O, it's probably not the threading that's your real problem. can you tell us how you're reading this stuff?

Answer 3

I think you might have missed something significant with either Threads, Streams or both :-)

You can start a new thread like this:

myThread.start();

The thread will be started and the run() method will be executed automatically by the jvm.

If the threads run-method is reading from a Stream, and it is the only one reading, it will not "miss" anything in that stream.

Answer 4

For suppose i am using Two threads,one thread is executing its task and goes to sleep at that time the second thread is executing its task and goes to sleep. after that the first thread wake up and starts its execution like this, is it call as running threads simultaneously?