java 匿名内部类 lambda 在多线程中的使用例子

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package Mythread;
import java.util.*;
import java.util.concurrent.Callable;
import java.util.concurrent.CompletionService;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorCompletionService;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;

class mythread1 extends Thread {
private int i;
public void run() {
for (; i<100;i++){
System.out.println(getName() + " "+i);
}
}

}

class mythread2 implements Runnable {
private int i;
public void run() {
   for (; i<100;i++){
    System.out.println(Thread.currentThread().getName() + " "+i);
    }
  }
}

class mythread3 implements Callable {
  int i;
public Integer call() throws Exception {
   for (; i<100;i++){
    System.out.println(Thread.currentThread().getName() + " "+i);
    }
   return i;
  }
}

public class mythread {

public static void main(String[] args) {
  // TODO Auto-generated method stub


//demo for ways3: callable and FutureTask



   //demo way4 for callable with anoymous inner class


      //demo way5 for callable with lambda expression feature in Java8

        FutureTask task3 = new FutureTask((Callable)()->{
         int i=0;
         for(i=0; i<100;i++) {
       System.out.println(Thread.currentThread().getName() + " "+i);
         }
      return i;
         }
        );

        for(int i=0;i<100;i++){
        System.out.println(Thread.currentThread().getName() + " "+i);
       if(i==20) {
         new Thread(task3,"lambda thread5 with value").start();// it's a Runnable
        }
        }
         try {
         System.out.println("lambda thread5 return value "+task3.get());
        } catch(Exception e) {
         e.printStackTrace();
        }
   }
    }

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