Android Open Source - androidcodes Condition Example

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Back to project page androidcodes.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.java.thread;
//from   w  w  w .ja  v a  2 s.  co  m
import java.util.Collection;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class ConditionExample {

  private int count;
  private final Lock lock = new ReentrantLock();

  private Condition isEmpty = lock.newCondition();

  private Condition isFull = lock.newCondition();

  public void isFull() throws InterruptedException {
    lock.lock();
    try {
      while (count == 10)
        isFull.await();

      count++;

      isFull.signalAll();
    } finally {
      lock.unlock();
    }

  }

  public void isEmpty() throws InterruptedException {
    System.out.println("inside is empty");
    lock.lock();
    try {
      while (count == 0)
        isEmpty.await();

      count--;
      System.out.println("is empty " + count);
      isEmpty.signalAll();
    } finally {
      lock.unlock();
    }

  }

  public static void main(String[] args) {
    final ConditionExample ce = new ConditionExample();
    Thread t1 = new Thread(new Runnable() {

      @Override
      public void run() {

        try {

          while (true)
            ce.isEmpty();
        } catch (InterruptedException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }
    });

    Thread t2 = new Thread(new Runnable() {

      @Override
      public void run() {

        try {
          while (true)
            ce.isFull();
        } catch (InterruptedException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }
    });

    t1.start();
    t2.start();

  }
}

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