线程的创建方法

1.通过继承Runnable接口实现

        

public class TestThread1 implements Runnable{

    

    public static void main(String[] args) {

         TestThread1 t1 = new TestThread1();

         Thread t =new Thread(t1);

         t.start();

    }

    @Override

    public void run() {

         System.out.println("测试");

    }

}

2.通过继承thread类实现：

public class TestThread2 extends Thread{

    

    public static void main(String[] args) {

         TestThread2 t1 = new TestThread2();

         

         t1.start();

    }

    @Override

    public void run() {

         System.out.println("测试");

    }

}

3.通过匿名内部类实现：

public class TestThread3{

    

    public static void main(String[] args) {

         new Thread(new Runnable() {

             @Override

             public void run() {

                 System.out.println("测试");

             }

         }).start();

    }

}

4.通过FutureTask和Callable接口实现线程的创建

public class TestThread4{

    public static void main(String[] args) {

         ExecutorService executor =  Executors.newCachedThreadPool();

         Task t =new Task();

         FutureTask<Integer> fu = new  FutureTask<>(t);

         Thread thread = new Thread(fu);

         thread.start();

         try {

             System.out.println(fu.get());

         } catch (InterruptedException e) {

             e.printStackTrace();

         } catch (ExecutionException e) {

             e.printStackTrace();

         }

    }

}

public class Task implements Callable<Integer>{

         @Override

         public Integer call() throws Exception {

             return 1;

         }

}

5.定时器

public class TestThread5{

    public static void main(String[] args) {

         Timer timer = new Timer();

         timer.schedule(new TimerTask() {

             @Override

             public void run() {

                 System.out.println("定时器"+timer.toString());

             }

         }, 0,1000);

    }

}

6.线程池创建：

public class TestThread6{

    public static void main(String[] args) {

         ExecutorService e  =Executors.newFixedThreadPool(10);

         for(int i =0;i<10;i++){

             e.execute(new Runnable() {            

                 @Override

                 public void run() {

                     System.out.println(Thread.currentThread().getName());

                 }

             });

         }

         e.shutdown();

    }

}

7.用lambda 表达式

public class TestThread7{

    public static void main(String[] args) {

         new Thread(()->  System.out.println("thread")).start();

         Runnable r =()->  System.out.print("runnable");

         r.run();

    }

}