java中有哪些创建线程的方法

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继承Thread类

public class ExtendsThreadTest extends Thread {    @Override    public void run() {        System.out.println("thread is running！");    }    public static void main(String[] args) {        ExtendsThreadTest et1 = new ExtendsThreadTest();        et1.start();    }}

实现Runnable接口

public class RunnableTest implements Runnable{    @Override    public void run() {        System.out.println("thread is running！");    }    public static void main(String[] args) {        Thread t1 = new Thread(new RunnableTest());        t1.start();    }}

匿名内部类的两种写法

public class App {    public static void main(String[] args){        new Thread(new Runnable() {            @Override            public void run() {                System.out.println("thread1 is running！");            }        }){}.start();        new Thread(){            @Override            public void run(){                System.out.println("thread2 is running！");            }        }.start();    }}

基于java.util.concurrent.Callable工具类的实现，带返回值

public class CallableTest {    public static void main(String[] args) throws Exception {        Callable call = new Callable() {            @Override            public Integer call() throws Exception {                System.out.println("thread is running！");                return 1;            }        };        FutureTask task = new FutureTask<>(call);        Thread t =  new Thread(task);        t.start();    }}

基于java.util.Timer工具类的实现

public class TimerTest {    public static void main(String[] args) throws Exception {        Timer timer = new Timer();        timer.schedule(new TimerTask() {            @Override            public void run() {                System.out.println("thread is running!");            }        }, new Date());    }}

基于java.util.concurrent.Executors工具类，基于线程池的实现

public class ThreadPoolTest {    public static void main(String[] args) {        // 创建线程池        ExecutorService threadPool = Executors.newFixedThreadPool(10);        while(true) {            threadPool.execute(new Runnable() { // 提交多个线程任务，并执行                @Override                public void run() {                    System.out.println(Thread.currentThread().getName() + " is running ..");                    try {                        Thread.sleep(3000);                    } catch (InterruptedException e) {                        e.printStackTrace();                    }                }            });        }    }}

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