java virtual machine

Small Tool to streamline the size of JRE: http://blog.csdn.net/cping1982/archive/2008/09/02/2865198.aspx Project address: http://code.google.com/p/greenvm/ Keywords: JRE, streamlining, compression, JVM, java. net, virtual machine, green software, minimum space, Unbox, compression, green, greenjvm Updated to version 0.1.1.4 on January 1, September 6. Change:Add

　　There are 4 ways to describe memory allocation and recycling, namely how memory is allocated , what memory needs to be recycled , under What circumstances , and how to monitor and optimize the GC mechanism .Java GC (garbage collction) garbage collection mechanism is one of the main differences between Java and C + +. Self-reclaim some useless memory by tagging the memory in the JVM. The most current use i

The memory structure of the Java Virtual machine, as distinct from the Java memory model, which focuses on multithreading　　But before we do that, we should consider: Why is the memory structure of the JVM divided?I think the main is based on the different data update frequency, access speed requirements, garbage collec

See this topic, a lot of people will think I write my Java code, as for the class, the JVM love how to load the loading, bloggers for a long time also think so. With the accumulation of programming experience, more and more feel the importance of understanding the essentials of virtual machine. Gossip not to say, the usual, first a piece of code hanging appetite.

the structure of the book: From a macro point of view, the entire Java technology system, Java and JVM development process, modularity, and JDK compilation Explains the automatic memory management of the JVM, including the partitioning principle of the memory area of the virtual machine and the causes of v

First, memory managementTwoThread Exclusive ZoneProgram Counter Register)A program counter is a small amount of memory space, which can be seen as the line number indicator of the bytecode executed by the current thread. In the virtual machine conceptual model, the bytecode interpreter works by changing the value of this counter to select the next byte-code instruction to execute, and the basic functions su

next step is to focus on what exactly is a classloader? And how does it work?First look at some of the features of the loader, a bit abstract, but always helpful."Hierarchical structureThe ClassLoader is organized into a hierarchical relationship, that is, a parent-child relationship. Among them, Bootstrap is the father of all ClassLoader. As shown in the following:--bootstrap class Loader:When running a Java vir