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Question What Java implementations, other than ports of the Sun JDK, are available for Linux?
Topics Platform:UNIX:Linux
Author Nathan Meyers PREMIUM
Created Sep 2, 2000 Modified Sep 2, 2000


Answer
Kaffe is a cleanroom open-source implementation of the PersonalJava spec. It fully implements PersonalJava, implements most of the JDK1.1 spec, and implements a significant subset of the JDK1.2SE spec. It's available for Linux and many other platforms.

The GNU Compiler for Java (GCJ) is a native-language compiler for Java, and part of the GNU compiler suite. Together with the GNU Classpath project, GCJ provides a development and runtime environment for building native applications from Java source.

TowerJ is a commercial deployment environment for Java server-side applications. Using ahead-of-time compilation and a proprietary runtime engine, TowerJ boasts the best runtime performance available on an i386 platform.

Some other efforts, such as Japhar and ElectricalFire, do not appear to be under active development at the moment.

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Other commercial JVMs
Joi Ellis, Apr 27, 2001
JRockit is a JVM for Solaris, Linux, and Windows 2000. There is an advertisement for it in the April 2001 issue of JDJ. http://www.jrockit.com/ I haven't used this JVM, I'm just repeating the contact info.

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IBM has a JVM for Linux, too.
Joi Ellis, Apr 27, 2001
http://www-106.ibm.com/developerworks/java/jdk/linux130/

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Related Links

Linux FAQ

Linux Forum

The Blackdown Organization - porting Java for multiple Linux platforms

Sun's JDK1.2.2 for Linux

IBM's JDK1.3 for Linux

Kaffe - a cleanroom Java implementation

gcj - the Gnu Compiler for Java

Java Programming on Linux (book by FAQ manager)

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