import java.util.concurrent.Callable;/*** @author  silence* Callable创建多线程* 创件一个类，实现 Callable  《》 这里填返回值类型* 重写call 方法。*/
public class MyCallable implements Callable<String> {@Overridepublic String call() throws Exception {for (int i = 0; i < 100; i++) {System.out.print("callable:");System.out.print(Thread.currentThread().getName()+"--");System.out.println(i);}return "callable执行完了";}
}

========================

import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;public class Demo1 {public static void main(String[] args) throws ExecutionException, InterruptedException {MyCallable callable1 = new MyCallable();FutureTask futuretask = new FutureTask(callable1);//创建多线程Thread thread = new Thread(futuretask);//启动多线程thread.start();//获取返回值String o = (String) futuretask.get();System.out.println(o);}
}