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Janino

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Janino is a developed by Arno Unkrig. This site is not affiliated with Arno Unkrig in any way. Read more.
Janino icon Janino is a super-small, super-fast compiler that reads a Java expression, block, or source file, and generates Java bytecode that is loaded and executed directly. It is not intended to be a development tool, but an embedded compiler for run-time com
Version2.7.7
LicenseFree
OS supportWindows 8, Windows XP, Windows 7, Windows Vista
ReleasedJan 12, 2015
Last updatedDec 14, 2014
Total downloads943
Last week94
PublisherArno Unkrig
User rating
 (1 rating)
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Publisher's Description

From Arno Unkrig
Janino is a super-small, super-fastcompiler that reads a Java expression, block, or source file, and generates Java bytecode that is loaded and executed directly. It is not intended to be a development tool, but an embedded compiler for run-time compilation purposes, such as expression evaluators or "server pages" engines like JSP. Properties The major design goal was to keep the compiler small and simple, while partially sacrificing completeness. I don't like the idea of carrying around huge libraries for simple applications. See Parser for the list of implemented and missing language features. When do you need an efficient expression evaluator? Say you build an e-commerce system, which computes the shipping cost for the items that the user put into his/her shopping cart. Because you don't know the merchant's shipping cost model at implementation time, you could implement a set of shipping cost models that come to mind (flat charge, by weight, by number of items, ...) and select one of those at run-time. In practice, you will most certainly find that the shipping cost models you implemented will rarely match what the merchant wants, so you must add custom models, which are merchant-specific. If the merchant's model changes later, you must change your code, re-compile and re-distribute your software. Because this is so unflexible, the shipping cost expression should be specified at run-time, not at compile-time. This implies that the expression must be scanned, parsed and evaluated at run-time, which is why you need an expression evaluator. A simple expression evaluator would parse an expression and create a "syntax tree". The expression "a + b * c", for example, would compile into a "Sum" object who's first operand is parameter "a" and who's second operand is a "Product" object who's operands are parameters "b" and "c". Such a syntax tree can evaluated relatively quickly. However, the run-time performance is about a factor of 100 worse than that of native Ja

Specifications

Info URLhttp://docs.codehaus.org/display/JANINO/
Download URLhttp://dist.codehaus.org/janino/janino-2.7.7.zip
Install supportNo Install Support
LanguageEnglish
What's new is version 2.7.7? Updated the overview page.

Publisher's License Agreement (EULA)

Janino - An embedded Java[TM] compiler Copyright (c) 2001-2010, Arno Unkrig All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS...

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Janino is a developed by Arno Unkrig. This site is not affiliated with Arno Unkrig in any way. SafestDownloads is a platform that helps you find the software you’ve been searching for. SafestDownloads not only offers a vast catalog of thousands of free programs to choose from, but makes it easy to download them.
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