线程间通信

子线程循环10次，主线程循环100次
交替循环50次

public class TraditionalThreadCommunication {
    public static void main(String[] args) {
        final Business business = new Business();
        new Thread(
                new Runnable() {
                    @Override
                    public void run() {
                        for (int i = 1; i <= 50 ; i++) {
                            business.sub(i);
                        }
                    }
                }
        ).start();
        for (int i = 1; i <= 50 ; i++) {
            business.main(i);
        }

    }
}

class Business{
    private boolean bShouldSub = true;
    public synchronized void sub(int i){
        if(!bShouldSub){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        for (int j = 1; j <=10 ; j++) {
            System.out.println("sub thread sequence of " + j + ",loop of " + i);
        }
        bShouldSub = false;
        this.notify();
    }
    public synchronized void main(int i){
        while(bShouldSub){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        for (int j = 0; j <=100 ; j++) {
            System.out.println("main thread sequence of " + j + ",loop of " + i);
        }
        bShouldSub = true;
        this.notify();
    }
}

public class ConditionCommunication {
    public static void main(String[] args) {
        final Business business = new Business();
        new Thread(
                new Runnable() {
                    @Override
                    public void run() {
                        for(int i=1;i<=50;i++){
                            business.sub(i);
                        }
                    }
                }
        ).start();
        for(int i=1;i<=50;i++){
            business.main(i);
        }

    }

    static class Business{
        Lock lock = new ReentrantLock();
        Condition condition = lock.newCondition();
        private boolean bShouldSub = true;
        public void sub(int i){
            lock.lock();
            try {
                while (!bShouldSub){
                    try {
                        condition.await();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                for(int j=1;j<=10;j++){
                    System.out.println("sub thread sequence of " + j + ",loop of " + i);
                }
                bShouldSub = false;
                condition.signal();
            } finally {
                lock.unlock();;
            }
        }
        public void main(int i){
            lock.lock();
            try {
                while (bShouldSub){
                    try {
                        condition.await();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                for(int j=1;j<=100;j++){
                    System.out.println("main thread sequence of " + j + ",loop of " + i);
                }
                bShouldSub = true;
                condition.signal();
            } finally {
                lock.unlock();;
            }
        }
    }
}

import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class ThreeConditionCommunication {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		final Business business = new Business();
		new Thread(
				new Runnable() {
					
					@Override
					public void run() {
					
						for(int i=1;i<=50;i++){
							business.sub2(i);
						}
						
					}
				}
		).start();
		
		new Thread(
				new Runnable() {
					
					@Override
					public void run() {
					
						for(int i=1;i<=50;i++){
							business.sub3(i);
						}
						
					}
				}
		).start();		
		
		for(int i=1;i<=50;i++){
			business.main(i);
		}
		
	}

	static class Business {
			Lock lock = new ReentrantLock();
			Condition condition1 = lock.newCondition();
			Condition condition2 = lock.newCondition();
			Condition condition3 = lock.newCondition();
		  private int shouldSub = 1;
		  public  void sub2(int i){
			  lock.lock();
			  try{
				  while(shouldSub != 2){
					  try {
						condition2.await();
					} catch (Exception e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				  }
					for(int j=1;j<=10;j++){
						System.out.println("sub2 thread sequence of " + j + ",loop of " + i);
					}
				  shouldSub = 3;
				  condition3.signal();
			  }finally{
				  lock.unlock();
			  }
		  }

		  public  void sub3(int i){
			  lock.lock();
			  try{
				  while(shouldSub != 3){
					  try {
						condition3.await();
					} catch (Exception e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				  }
					for(int j=1;j<=20;j++){
						System.out.println("sub3 thread sequence of " + j + ",loop of " + i);
					}
				  shouldSub = 1;
				  condition1.signal();
			  }finally{
				  lock.unlock();
			  }
		  }		  
		  
		  public  void main(int i){
			  lock.lock();
			  try{
				 while(shouldSub != 1){
				  		try {
							condition1.await();
						} catch (Exception e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
				  	}
					for(int j=1;j<=100;j++){
						System.out.println("main thread sequence of " + j + ",loop of " + i);
					}
					shouldSub = 2;
					condition2.signal();
		  }finally{
			  lock.unlock();
		  }
	  }
	
	}
}