Java 的隐藏特性 [英] Hidden Features of Java

问题描述

阅读C#的隐藏特性后，我想知道，C#的一些隐藏特性是什么?爪哇?

After reading Hidden Features of C# I wondered, What are some of the hidden features of Java?

推荐答案

双括号初始化 几个月前当我第一次发现它时让我大吃一惊，之前从未听说过.

Double Brace Initialization took me by surprise a few months ago when I first discovered it, never heard of it before.

ThreadLocals 通常不是这样广为人知的一种存储每线程状态的方法.

ThreadLocals are typically not so widely known as a way to store per-thread state.

由于 JDK 1.5 Java 除了锁之外还有非常好的实现和健壮的并发工具，它们位于 java.util.concurrent 一个特别有趣的例子是 java.util.concurrent.atomic 子包，其中包含实现 compare-and-swap 操作并且可以映射到实际的本地硬件支持版本这些操作.

Since JDK 1.5 Java has had extremely well implemented and robust concurrency tools beyond just locks, they live in java.util.concurrent and a specifically interesting example is the java.util.concurrent.atomic subpackage that contains thread-safe primitives that implement the compare-and-swap operation and can map to actual native hardware-supported versions of these operations.

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