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Java:使用Executors创建和管理线程
www.jz123.cn 2009-09-08 来源: IT专家网 责任编辑(袁袁) 我要投递新闻
我们试图给线程加入daemon和priority的属性设置。
5.1设置后台线程属性
DaemonThreadFactory.java package com.zj.concurrency.executors.factory; import java.util.concurrent.ThreadFactory; public class DaemonThreadFactory implements ThreadFactory { public Thread newThread(Runnable r) { Thread t = new Thread(r); t.setDaemon(true); return t; } } |
5.2 设置优先级属性
最高优先级MaxPriorityThreadFactory.java package com.zj.concurrency.executors.factory; import java.util.concurrent.ThreadFactory; public class MaxPriorityThreadFactory implements ThreadFactory { public Thread newThread(Runnable r) { Thread t = new Thread(r); t.setPriority(Thread.MAX_PRIORITY); return t; } } |
最低优先级MinPriorityThreadFactory.java package com.zj.concurrency.executors.factory; import java.util.concurrent.ThreadFactory; public class MinPriorityThreadFactory implements ThreadFactory { public Thread newThread(Runnable r) { Thread t = new Thread(r); t.setPriority(Thread.MIN_PRIORITY); return t; } } |
5.3启动带有属性设置的线程
ExecFromFactory.java package com.zj.concurrency.executors; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import com.zj.concurrency.executors.factory.DaemonThreadFactory; import com.zj.concurrency.executors.factory.MaxPriorityThreadFactory; import com.zj.concurrency.executors.factory.MinPriorityThreadFactory; public class ExecFromFactory { public static void main(String[] args) throws Exception { ExecutorService defaultExec = Executors.newCachedThreadPool(); ExecutorService daemonExec = Executors .newCachedThreadPool(new DaemonThreadFactory()); ExecutorService maxPriorityExec = Executors .newCachedThreadPool(new MaxPriorityThreadFactory()); ExecutorService minPriorityExec = Executors .newCachedThreadPool(new MinPriorityThreadFactory()); for (int i = 0; i < 10; i++) daemonExec.execute(new MyThread(i)); for (int i = 10; i < 20; i++) if (i == 10) maxPriorityExec.execute(new MyThread(i)); else if (i == 11) minPriorityExec.execute(new MyThread(i)); else defaultExec.execute(new MyThread(i)); } } |
结果:
Create Thread-0
Create Thread-1
Create Thread-2
Create Thread-3
Thread-0 run 1 time(s)
Thread-0 run 2 time(s)
Thread-1 run 1 time(s)
Thread-1 run 2 time(s)
Thread-2 run 1 time(s)
Thread-2 run 2 time(s)
Create Thread-4
Thread-4 run 1 time(s)
Thread-4 run 2 time(s)
Create Thread-5
Thread-5 run 1 time(s)
Thread-5 run 2 time(s)
Create Thread-6
Create Thread-7
Thread-7 run 1 time(s)
Thread-7 run 2 time(s)
Create Thread-8
Thread-8 run 1 time(s)
Thread-8 run 2 time(s)
Create Thread-9
Create Thread-10
Thread-10 run 1 time(s)
Thread-10 run 2 time(s)
Create Thread-11
Thread-9 run 1 time(s)
Thread-9 run 2 time(s)
Thread-6 run 1 time(s)
Thread-6 run 2 time(s)
Thread-3 run 1 time(s)
Thread-3 run 2 time(s)
Create Thread-12
Create Thread-13
Create Thread-14
Thread-12 run 1 time(s)
Thread-12 run 2 time(s)
Thread-13 run 1 time(s)
Thread-13 run 2 time(s)
Create Thread-15
Thread-15 run 1 time(s)
Thread-15 run 2 time(s)
Create Thread-16
Thread-16 run 1 time(s)
Thread-16 run 2 time(s)
Create Thread-17
Create Thread-18
Create Thread-19
Thread-14 run 1 time(s)
Thread-14 run 2 time(s)
Thread-17 run 1 time(s)
Thread-17 run 2 time(s)
Thread-18 run 1 time(s)
Thread-18 run 2 time(s)
Thread-19 run 1 time(s)
Thread-19 run 2 time(s)
Thread-11 run 1 time(s)
Thread-11 run 2 time(s)
本文出自 “子 孑” 博客,请务必保留此出处http://zhangjunhd.blog.51cto.com/113473/70068
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