Exchanger-两个线程进行数据交换

 

 1  两个线程进行数据交换  

 

package thread.test1;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.Exchanger;

/**
 * 作用：Exchanger ：两个线程进行数据交换 
 * 
 */
public class ExchangerTest {

	public static void main(String[] args) {
		
		ExchangerTest exchangerTest = new ExchangerTest();
		Exchanger<List<Integer>> exchanger  = new Exchanger<List<Integer>>(); 
		
		new Thread(exchangerTest.new Work(1,  exchanger)).start();  
		new Thread(exchangerTest.new Work(2,  exchanger)).start();
	}
 
	
	class Work implements Runnable{
		
		private Exchanger<List<Integer>> exchanger ; 
		private List<Integer> data =new ArrayList<Integer>();  
		private Integer num ; //线程
		
		public Work(Integer num ,Exchanger<List<Integer>> exchanger ){
			this.num = num ; 
			this.exchanger = exchanger;
		}
		
		@Override
		public void run() {
			Random random = new Random();
			
			data.add(random.nextInt(20) ) ;
			data.add(random.nextInt(20) ) ;
			data.add(random.nextInt(20) ) ;
			System.out.println("线程："+num+ " 数据："+ data);
		 
			try {
				exchanger.exchange( data) ;
				System.out.println( "线程："+num+ "数据更改结束。"+data);
				
			} catch (InterruptedException e) {
				e.printStackTrace();
			} 
		}
	}
}

 

 

 结果：

   

线程：1 数据：[6, 19, 19]
线程：2 数据：[1, 1, 0]
线程：1数据更改结束。[6, 19, 19]
线程：2数据更改结束。[1, 1, 0]