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JVM
Last modified: Wednesday, September 18, 2002 

Acronym for Java Virtual Machine. An abstract computing machine, or virtual machine, JVM is a platform-independent execution environment that converts Java bytecode into machine language and executes it. Most programming languages compile source code directly into machine code that is designed to run on a specific microprocessor architecture or operating system, such as Windows or UNIX. A JVM -- a machine within a machine -- mimics a real Java processor, enabling Java bytecode to be executed as actions or operating system calls on any processor regardless of the operating system. For example, establishing a socket connection from a workstation to a remote machine involves an operating system call. Since different operating systems handle sockets in different ways, the JVM translates the programming code so that the two machines that may be on different platforms are able to connect.

JVMs are not the only virtual machines being used today.

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For internet.com pages about JVM . Also check out the following links!

Related Links

Inside Java: The Java Virtual Machine
This article from javacoffeebreak.com explains with diagrams a simple version of the way a JVM works.

The Java Virtual Machine Specification
An online book from Sun examining the specifics of the Java Virtual Machine.

Under the Hood: The Lean, Mean Virtual Machine
An introduction to the basic structure and functionality of the Java Virtual Machine .

related categories

Operating Systems

Programming

Programming Languages

related terms

J2EE

Java

Jini

JIT

JNI

operating environment

virtual

virtual machine


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