面试Java内存的相关内容

面试：精通Java；面试官：来讲一下JVM虚拟机内存模型的最底层原理，必须说详细说清楚，知其所以然。看完后，你还敢在简历上写精通Java吗？

文章目录 1.虚拟机栈（VM stack）2.本地方法栈（Native Method Stack）3.程序计数器（Program Counter Register）3.1类比X86架构中的IP指令指针寄存器3.2JVM中的程序计数器4.方法区（Method Area）5.堆（heap）6.附录（VM...

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程序计数器程序计数器（Program Counter Register）是一块较小的内存空间，它记录了当前线程所执行的字节码的行号。在JVM的概念模型里，字节码解释器工作时就是通过改变它的值来选取下一条需要执行的字节码指令，分支、循环、跳转、异常处理、线程恢复等基础功能都是依赖它来完成的。虚拟机栈与...

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面试官，Java8 JVM内存结构变了，永久代到元空间

在文章《JVM之内存结构详解》中我们描述了Java7以前的JVM内存结构，但在Java8和以后版本中JVM的内存结构慢慢发生了变化。作为面试官如果你还不知道，那么面试过程中是不是有些露怯？作为面试者，如果知晓这些变化，又将成为面试中的亮点。如果在网络上搜索JVM内存结构，90%的可能会搜到Java7...

携程面试官问我怎么划分 Java 虚拟机内存区域，相见恨晚！

今天的标题绝非标题党，看下面这幅截图就明白了，读者真真的留言~在谈 JVM 内存区域划分之前，我们先来看一下 Java 程序的具体执行过程，我画了一幅图。Java 源代码文件经过编译器编译后生成字节码文件，然后交给 JVM 的类加载器，加载完毕后，交给执行引擎执行。在整个执行的过程中，...

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