什么是java線程池框架

1、什么是java線程池框架什么是java線程池框架多線程是程序員面試時常常會面對的問題，對多線程概念的掌握和理解水平，也常常被用來衡量一個人的.編程實力。不錯，普通的多線程已經(jīng)不容易了。一、線程池結(jié)構(gòu)圖二、示例定義線程接口6public class MyThread extends Thread Overridepublicvoid run() System.out.println(Thread.currentThread().getName() + 正在執(zhí)行);1：newSingleThreadExecutor10ExecutorService pool = Executors. newSin

2、gleThreadExecutor();Thread t1 = new MyThread();Thread t2 = new MyThread();Thread t3 = new MyThread();/將線程放入池中進(jìn)行執(zhí)行pool.execute(t1);pool.execute(t2);pool.execute(t3);/關(guān)閉線程池pool.shutdown();輸入結(jié)果：3pool-1-thread-1正在執(zhí)行pool-1-thread-1正在執(zhí)行pool-1-thread-1正在執(zhí)行2：newFixedThreadPool13ExecutorService pool = Execut

3、ors.newFixedThreadPool(3);Thread t1 = new MyThread();Thread t2 = new MyThread();Thread t3 = new MyThread();Thread t4 = new MyThread();Thread t5 = new MyThread();/將線程放入池中進(jìn)行執(zhí)行pool.execute(t1);pool.execute(t2);pool.execute(t3);pool.execute(t4);pool.execute(t5);pool.shutdown();輸入結(jié)果：4pool-1-thread-1正在執(zhí)行p

4、ool-1-thread-2正在執(zhí)行pool-1-thread-1正在執(zhí)行pool-1-thread-2正在執(zhí)行3 :newCachedThreadPool14ExecutorService pool = Executors.newCachedThreadPool();Thread t1 = new MyThread();Thread t2 = new MyThread();Thread t3 = new MyThread();Thread t4 = new MyThread();Thread t5 = new MyThread();/將線程放入池中進(jìn)行執(zhí)行pool.execute(t1);p

5、ool.execute(t2);pool.execute(t3);pool.execute(t4);pool.execute(t5);/關(guān)閉線程池pool.shutdown();輸入結(jié)果：5pool-1-thread-2正在執(zhí)行pool-1-thread-4正在執(zhí)行pool-1-thread-3正在執(zhí)行pool-1-thread-1正在執(zhí)行pool-1-thread-5正在執(zhí)行4 :ScheduledThreadPoolExecutor14ScheduledExecutorService pool = Executors.newScheduledThreadPool(2);pool.sched

6、uleAtFixedRate(new Runnable() /每隔一段時間就觸發(fā)異常 Override public void run() /throw new RuntimeException(); System.out.println(=); , 1000, 2000, TimeUnit.MILLISECONDS);pool.scheduleAtFixedRate(new Runnable() /每隔一段時間打印系統(tǒng)時間，證明兩者是互不影響的 Override public void run() System.out.println(+); , 1000, 2000, TimeUnit.MILLISECONDS)