CentOS Java多线程如何实现

<code>public class MyThread extends Thread {
    @Override
    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
    }
}</code>

<code>public class MyRunnable implements Runnable {
    @Override
    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);
        thread.start(); // 启动线程
    }
}</code>

<code>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;

public class MyCallable implements Callable<Integer> {
    @Override
    public Integer call() throws Exception {
        // 线程执行的代码
        return 42;
    }
}

public class Main {
    public static void main(String[] args) {
        ExecutorService executorService = Executors.newSingleThreadExecutor();
        MyCallable myCallable = new MyCallable();
        Future<Integer> future = executorService.submit(myCallable);

        try {
            Integer result = future.get(); // 获取任务执行结果
            System.out.println("Result: " + result);
        } catch (InterruptedException | ExecutionException e) {
            e.printStackTrace();
        }

        executorService.shutdown(); // 关闭线程池
    }
}</code>