Callable实现多线程(有返回值)

• Z时代
• 2024-01-10
• 分类：综合

package com.ego.item.test;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;
public class CallableDemo {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        FutureTask<String> stringFutureTask = new FutureTask<>(new java.util.concurrent.Callable<String>() {
            @Override
            public String call() throws Exception {
                for (int i = 0; i < 100; i++) {
                    System.out.println("线程1--->" + i);
                }
                return "success---1";
            }
        });
        FutureTask<String> stringFutureTask2 = new FutureTask<>(new java.util.concurrent.Callable<String>() {
            @Override
            public String call() throws Exception {
                for (int i = 0; i < 100; i++) {
                    System.out.println("线程2--->" + i);
                }
                return "success---2";
            }
        });
        FutureTask<String> stringFutureTask3 = new FutureTask<>(new java.util.concurrent.Callable<String>() {
            @Override
            public String call() throws Exception {
                for (int i = 0; i < 100; i++) {
                    System.out.println("线程3--->" + i);
                }
                return "success---3";
            }
        });
        new Thread(stringFutureTask).start();
        new Thread(stringFutureTask2).start();
        new Thread(stringFutureTask3).start();
        System.out.println("线程1 执行返回结果: " + stringFutureTask.get());
        System.out.println("线程2 执行返回结果: " + stringFutureTask2.get());
        System.out.println("线程3 执行返回结果: " + stringFutureTask3.get());
    }
}

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