xlnjulp Stay Hungry, Stay Foolish

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I recently had the opportunity to test and tune the performance of several shop and portal applications built with Java and running on the Sun/Oracle JVM, among them some of the most visited in German

原文地址Java Objects Memory StructureUpdate (December 18th, 2008): I've posted here an experimental library that implements Sizeof for Java.One thing about Java that has always bothered me,

解释执行和编译执行解释执行是计算机语言的一种执行方式。由解释器（即编译器）现场解释执行，不生成目标程序。如BASIC语言的执行方式便是解释执行，一般解释执行效率较低，低于编译执行。 使用解释执行的程序我们一般称为解释程序。它将源语言直接作为源程序输入，解释执行解释一句后就提交计算机执行一句，并不形成目标程序。如在终端上打一条命令或语句，解释程序就立即将此语句解释成一条或几条指令并提交硬

在CMS（Concurrent Mark Sweep）之前的Parallel垃圾回收器重点关注的是

yuanUnderstanding how Java code is compiled into byte code and executed on a Java Virtual Machine (JVM) is critical because it helps you understand what is happening as your program executes. This

Understanding how Java code is compiled into byte code and executed on a Java Virtual Machine (JVM) is critical because it helps you understand what is happening as your program executes. This underst

在java的对象头中，mark word主要用于表示对象当前的状态。

在java6之前，内置锁synchronized都是重量锁