weixin_42072543的博客

JAVA中hashCode源码分析 public static int hashCode(byte[] value) { int h = 0; int length = value.length >> 1; for (int i = 0; i < length; i++) { h = 31 * h +...

总结 Classes that do not implement this interface will not have any of their state serialized or deserialized. All subtypes of a serializable class are themselves serializable. 没有实现Serializable接口的类...

protected T initialValue() { return null; } 必须重写此方法，否则初始化值为null void createMap(Thread t, T firstValue) { t.threadLocals = new ThreadLocalMap(this, firstValue); } 为本地线程创建LocalMap，使用firstValu...

先翻译源码介绍 Provides a framework for implementing blocking locks and related synchronizers (semaphores, events, etc) that rely on first-in-first-out (FIFO) wait queues. This class is designed to be a use...

四种线程池的介绍 newFixedThreadPool(int nThads) 定长的线程池 阻塞队列长度无限并且其中的线程可复用 当核心线程池满了的时候新的线程会在阻塞队列上等待 线程池中的线程需要shutdown才会释放，否则一直存在 适用场景： 适用场景：适合执行周期长的任务 newSingleThreadExecutor() 每次只有一个活动线程运行 阻塞队列无限 和newF...