1.ThreadPoolExecutor个参数的意义(类上的注释内容) * @param corePoolSize the number of threads to keep in the* pool, even if they are idle.* @param maximumPoolSize the maximum number of threads to allow in the* pool.* @param keepAliveTime when the number of threads
ThreadPoolExecutor全部参数的构造函数 public ThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory, RejectedExecutionHandler handler) { if (corePoolSize <
1.Excutor 源码非常简单,只有一个execute(Runnable command)回调接口 public interface Executor { /** * Executes the given command at some time in the future. The command * may execute in a new thread, in a pooled thread, or in the calling * thread, at the
1.ThreadPoolExecutor构造方法 public ThreadPoolExecutor(int corePoolSize,int maximumPoolSize,long keepAliveTime,TimeUnit unit, BlockingQueue<Runnable> workQueue,ThreadFactory threadFactory,RejectedExecutionHandler handler); corePoolSize:核心池的大小: m
为什么使用线程池: 1.创建/销毁线程伴随着系统开销,过于频繁的创建/销毁线程,会很大程度上影响处理效率. 2.线程并发数量过多,抢占系统资源从而导致阻塞. 3.对线程进行一些简单的管理. 在java中,线程池的类为ThreadPoolExecutor,该类提供了四种构造方法: //五个参数的构造函数 public ThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit
源码非常简单,只有一个execute(Runnable command)回调接口 public interface Executor { /** * Executes the given command at some time in the future. The command * may execute in a new thread, in a pooled thread, or in the calling * thread, at the discre
