Java并发编程:Java线程创建的方式

Java线程创建的方式

继承Thread类

实现Runnable接口

通过ExecutorService和Callable

基于线程池

1、继承Thread类

使用便利，但Java是单继承，继承了Thread类就不能继承其它类了

publicclassThreadTestextendsThread{publicvoidrun(){System.out.println(currentThread().getName());}publicstaticvoidmain(String[]args){ThreadTestthread1=newThreadTest();ThreadTestthread2=newThreadTest();thread1.start();thread2.start();}}

2、实现Runnable接口

使用接口，避免了单继承的局限

publicclassThreadTestimplementsRunnable{@Overridepublicvoidrun(){System.out.println(Thread.currentThread().getName());}publicstaticvoidmain(String[]args){ThreadTestthreadTest=newThreadTest();Threadthread1=newThread(threadTest,"线程1");Threadthread2=newThread(threadTest,"线程2");thread1.start();thread2.start();}

3、使用FutureTask方法

以上两种创建方法都不带返回值，而用FutureTask方法创建线程，则有返回值

importjava.util.concurrent.Callable;importjava.util.concurrent.ExecutionException;importjava.util.concurrent.FutureTask;publicclassThreadTestimplementsCallable<String>{@OverridepublicStringcall(){Stringname=Thread.currentThread().getName();returnname;}publicstaticvoidmain(String[]args)throwsExecutionException,InterruptedException{FutureTask<String>futureTask=newFutureTask<>(newThreadTest());Threadthread1=newThread(futureTask,"线程1");Threadthread2=newThread(futureTask,"线程2");thread1.start();thread2.start();System.out.println(futureTask.get());}}