monic Opcode(in hex) Other bytes Stack[before]→[after] Description aaload 32   arrayref, index → value load onto the stack a reference from an array aastore 53   arrayref, index, value → store into a reference in an array aconst_null 01   → null push…

link from:http://www.crowdstrike.com/blog/native-java-bytecode-debugging-without-source-code/index.html Native Java Bytecode Debugging without Source Code Feb 12, 2014 | Jason Geffner, Sr. Security Researcher At CrowdStrike, we've seen a moderate inc…

聊聊文字,写一篇关于 java 基础知识的博文. JVM 线程栈 到 函数运行 每一个JVM线程来说启动的时候都会创建一个私有的线程栈.一个jvm线程栈用来存储栈帧,jvm线程栈和C语言中的栈很类似,它负责管理局部变量.部分运算结果,同时也参与到函数调用和函数返回的工作中.JVM规范中运行线程栈的大小可以是固定的或者是动态分配的,也可以是根据一定规则计算的.不同jvm对栈的实现会不同,一些可能提供给开发人员自己控制jvm线程栈初始大小的方式:对于动态分配来说也可能提供对jvm最大和最小值的设置.…

转载自http://www.iteye.com/topic/98178   一.Java ClassLoader 1,什么是ClassLoader 与 C 或 C++ 编写的程序不同,Java 程序并不是一个可执行文件,而是由许多独立的类文件组成,每一个文件对应于一个 Java 类. 此外,这些类文件并非立即全部都装入内存,而是根据程序需要装入内存.ClassLoader 是 JVM 中将类装入内存的那部分. 而且,Java ClassLoader 就是用 Java 语言编写的.这意味着创建您自…

Java is never just a language.There are lots of programming languages out there, and few of them make much of a splash.Java is a whole platform, with a huge library, containing lots of reusable code, and an execution environment that provides service…

原文地址:http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/gc01/index.html Overview Purpose This tutorial covers the basics of how Garbage Collection works with the Hotspot JVM. Once you have learned how the garbage collector functions, lear…

1.2. The Java "White Paper" BuzzwordsThe authors of Java have written an influential White Paper that explains their design goals and accomplishments. They also published a shorter summary that is organized along the following 11 buzzwords:1. Si…

“学前”说明:<Learn Java for Android>这本书内容很多,都是精华,建议大家看英文版的.在这里我不打算一一总结书中的内容,书中每章节后面的exercises都很好,非常有总结性,而且在这些习题后面还有精华的Summary,所以,我就列举下每章exercises的内容(含参考答案)以及个人根据Summary提炼的一些内容(个人觉得比较重要的可能会另外写多点).写Blog的过程,就是我学习&温故知新的过程(一律采用英文哦,顺便学下professional English…

In this tutorial we will discuss about different types of questions that can be used in a Java interview, in order for the employer to test your skills in Java and object-oriented programming in general. In the following sections we will discuss abou…

Now, it is time to gather all the major Java 8 features under one reference post for your reading pleasure. Enjoy! Table Of Contents 1. Introduction 2. New Features in Java language 2.1. Lambdas and Functional Interfaces 2.2. Interface Default and St…