java中实现多线程的方式
2023-06-03 本文已影响0人
小院看客
1、继承Thread类实现
public class MyThread extends Thread{
public static void main(String[] args){
MyThread thread = new MyThread();
thread.start();
}
@override
public void run(){
System.out.println("hello");
}
}
重写的是run方法
2、实现Runnable接口
public class MyThread implements Runnable{
public static void main(String[] args){
Thread thread = new Thread(new MyThread());
thread.start();
}
public void run(){
System.out.println("hello");
}
}
3、实现Callable接口
public class MyThread implements Callable<String>{
public static void main(String[] args) throws ExecutionException, InterruptedException {
FutureTask<String> futureTask = new FutureTask<>(new MyThread());
Thread thread = new Thread(futureTask);
thread.start();
String result = futureTask.get();
System.out.println(result);
}
@Override
public String call() throws Exception {
return "hello";
}
}
实现call方法,得使用Thread+FutureTask,这种方式支持拿到异步执行任务的结果。
4、线程池方式