Java面试并发编程的相关内容

java-面试- Java并发编程(一)——并发编程需要注意的问题

并发是为了提升程序的执行速度，但并不是多线程一定比单线程高效，而且并发编程容易出错。若要实现正确且高效的并发，就要在开发过程中时刻注意以下三个问题：上下文切换死锁资源限制接下来会逐一分析这三个问题，并给出相应的解决方案。问题一：上下文切换会带来额外的开销线程的运行机制一个CPU每个时刻...

java面试-Java并发编程(二)——重排序

当我们写一个单线程程序时，总以为计算机会一行行地运行代码，然而事实并非如此。什么是重排序？重排序指的是编译器、处理器在不改变程序执行结果的前提下，重新排列指令的执行顺序，以达到最佳的运行效率。重排序分类重排序分为：编译器重排序和处理器重排序。数据依赖编译器和处理器并不会随意的改变指令...

Java面试疑难点解析 - 面试技巧及语言基础

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java面试-Java并发编程(五)——中断

什么是中断？在Java中没有办法立即停止一条线程，然而停止线程却显得尤为重要，如取消一个耗时操作。因此，Java提供了一种用于停止线程的机制——中断。中断只是一种协作机制，Java没有给中断增加任何语法，中断的过程完全需要程序员自己实现。若要中断一个线程，你需要手动调用该线程的interrupt...

java面试-Java并发编程(六)——线程间的通信

多条线程之间有时需要数据交互，下面介绍五种线程间数据交互的方式，他们的使用场景各有不同。 1. volatile、synchronized关键字 PS：关于volatile的详细介绍请移步至：Java并发编程的艺术(三)——volatile 1.1 如何实现通信？这两种方式都采用了同步机制实现多条...

java-面试-Java并发编程(七)——Executors

Executors框架简介 Executor框架便是Java 5中引入的，其内部使用了线程池机制，它在java.util.cocurrent 包下，通过该框架来控制线程的启动、执行和关闭，可以简化并发编程的操作。因此，在Java 5之后，通过Executor来启动线程比使用Thread的start方...

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