java需要关注的知识点---并发之使用Executor

public class CachedthreadPool {public static void main(String[] args) {ExecutorService es = Executors.newCachedThreadPool();for ( int i = 0; i< 5; i++)es.execute(new LiftOff());es.shutdown();}}

public class MoreBasicThread {/** * @param args */public static void main(String[] args) {for (int i = 0; i< 5; i++) {new Thread(new LiftOff()).start();}System.out.println("Waiting for liftOff");}}

public class SingleThreadExecutor {public static void main(String[] args) {// 保证无论何时都只有一个线程在运行。ExecutorService es = Executors.newSingleThreadExecutor();for(int i = 0; i < 5; i++) {es.execute(new LiftOff());}es.shutdown();}}