java 多線程之間進行資料交換__java

import java.util.concurrent.Exchanger;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;/** * 多線程之間交換資料使用Exchanger方法來傳遞想要傳遞的資料，並且返回時接受其他線程傳遞的數 * @author Bowin * */public class ExchangeTest {      public static void main(String[] args) {          ExecutorService service =Executors.newCachedThreadPool();          final Exchanger<Object> exchanger = new Exchanger<>();          service.execute(new Runnable() {              @Override              public void run() {                  try{                      String data1 = "零食";                      System.out.println("線程"+Thread.currentThread().getName()+                              "正在把資料 "+data1+" 換出去");                      Thread.sleep((long)Math.random()*10000);                      String data2 = (String)exchanger.exchange(data1);//等待其他線程執行exchange方法,並擷取其他線程的執行結果                    System.out.println("線程 "+Thread.currentThread().getName()+                              "換回的資料為 "+data2);                  }catch(Exception e){                      e.printStackTrace();                  }                                }          });                    service.execute(new Runnable() {                            @Override              public void run() {                  try{                      String data1 = "錢";                      System.out.println("線程"+Thread.currentThread().getName()+                              "正在把資料 "+data1+" 交換出去");                      Thread.sleep((long)(Math.random()*10000));                      String data2 =(String)exchanger.exchange(data1);                      System.out.println("線程 "+Thread.currentThread().getName()+                              "交換回來的資料是: "+data2);                  }catch(Exception e){                      e.printStackTrace();                  }                                                  }          });      }  }