JikesTM is a compiler for the JavaTM language. The Jikes project strives for strict adherence to the Java Language and Java Virtual Machine Specifications. Jikes' most popular feature is it's extremely fast compile speed.
As you can see, Jikes has moved again. We're now hosted at SourceForge®. This move was a result of IBM's decision to pull out of the project hosting space. Since there was a great amount of similarity between sf.net and dw/oss, the change will be mostly cosmetic.
You may wonder why the world needs another Java compiler, considering that Sun provides javac free with its SDK. Jikes has five advantages that make it a valuable contribution to the Java community:
* Open source. Jikes is OSI Certified Open Source Software. OSI Certified is a certification mark of the Open Source Initiative.
* Strictly Java compatible. Jikes strives to adhere to both The Java Language Specification and The Java Virtual Machine Specification as tightly as possible, and does not support subsets, supersets, or other variations of the language. The FAQ describes some of the side effects of this strict language conformance.
* High performance. Jikes is a high performance compiler, making it ideal for use with larger projects.
* Dependency analysis. Jikes performs a dependency analysis on your code that provides two very useful features: Incremental builds and makefile generation.
* Constructive Assistance. Jikes strives to help the programmer write better code in two key ways. Jikes has always strived to provide clear error and warning text to assist the programmer in understanding problems, and now with release 1.19 Jikes helps point out common programming mistakes as documented in Effective Java.
Abridged from a FAQ entry which was adapted from some material by Lou Grinzo for an article he wrote.
The fact that Jikes is a high-performance, highly compatible Java compiler that can be used on almost any computing platform makes it an interesting program and worth investigating for almost any Java programmer. But Jikes is also notable because it lies at the center of two events: the adoption of open source philosophy and practice by large corporations, and the continued growth of Java for Linux.
It's worth pointing out that Jikes is not, and is not intended to be, a complete development environment -- it is simply a command line compiler. It should not be considered a replacement for more complete tools, such as Visual Slick Edit or Eclipse which provide sophisticated graphical IDEs (Integrated Development Environments).
The Jikes compiler was released in binary form in April 1997 on the IBM alphaWorks site. Jikes for Linux was released on 15 July 1998. The response was overwhelming -- Jikes had more downloads in the three months after the announcement than in the fifteen months before the announcement. Around the end of March 2002, IBM opened a fledgling community hosting location attached to their developerWorks site with Jikes as a founding member. Approximately 3 years later this server was decommissioned and the most active projects migrated into SourceForge.net hosting options. During those three years Jikes was the #1 most popular project every month, often by a large margin. We approached nearly 250,000 downloads while residing at dw/oss, and had been consistently tallying triple digit daily downloads.
Release of Jikes for Linux was soon followed by requests to open up the source. Many notes and comments from users suggested this would be a good idea. The source was released under a liberal license in December 1998 to make a very visible demonstration of IBM's commitment to open standards and to Java Technology, to make Jikes more reliable and accessible, to encourage more widespread use of Java Technology, to encourage standardization of Java Technology, and to gain some experience actually running an open source project.
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