java 新建线程有哪些常见方法_运维文库_资讯中心

发布时间:2026-04-29 02:27:20

阅读量:2

在Java中，新建线程有多种方法。以下是一些常见的方法：

继承Thread类：

class MyThread extends Thread {
    public void run() {
        // 线程执行的代码
    }
}

public class Main {
    public static void main(String[] args) {
        MyThread myThread = new MyThread();
        myThread.start(); // 启动线程
    }
}

实现Runnable接口：

class MyRunnable implements Runnable {
    public void run() {
        // 线程执行的代码
    }
}

public class Main {
    public static void main(String[] args) {
        MyRunnable myRunnable = new MyRunnable();
        Thread thread = new Thread(myRunnable); // 创建线程
        thread.start(); // 启动线程
    }
}

使用Callable接口和Future：

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

class MyCallable implements Callable {
    public String call() throws Exception {
        // 线程执行的代码，返回值类型为String
        return "Hello, World!";
    }
}

public class Main {
    public static void main(String[] args) throws InterruptedException, ExecutionException {
        ExecutorService executorService = Executors.newSingleThreadExecutor();
        MyCallable myCallable = new MyCallable();
        Future future = executorService.submit(myCallable); // 提交任务
        String result = future.get(); // 获取任务结果
        System.out.println(result); // 输出结果
        executorService.shutdown(); // 关闭线程池
    }
}

使用Java 8的CompletableFuture：

import java.util.concurrent.CompletableFuture;

class MyCompletableFuture {
    public static CompletableFuture helloWorld() {
        return CompletableFuture.supplyAsync(() -> {
            // 线程执行的代码，返回值类型为String
            return "Hello, World!";
        });
    }
}

public class Main {
    public static void main(String[] args) {
        MyCompletableFuture.helloWorld().thenAccept(result -> {
            System.out.println(result); // 输出结果
        });
    }
}