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JRuby is a Java implementation of the Ruby interpreter, being developed by the JRuby team. Software development is the translation of a user need or marketing goal into a software product. ...
A software release is the distribution, whether public or private, of an initial or new and upgraded version of a computer software product. ...
June 7 is the 158th day of the year in the Gregorian calendar (159th in leap years), with 207 days remaining. ...
Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ...
In computing, a platform describes some sort of framework, either in hardware or software, which allows software to run. ...
A Java Virtual Machine (JVM), originally developed by Sun Microsystems, is a virtual machine that executes Java bytecode. ...
Computer software can be organized into categories based on common function, type, or field of use. ...
A software license is a legal agreement which may take the form of a proprietary or gratuitous license as well as a memorandum of contract between a producer and a user of computer software. ...
The CPL (Common Public License) is a free software / open-source software license published by IBM. Its license terms have been approved by the Open Source Initiative and Free Software Foundation. ...
The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ...
GNU logo The GNU Lesser General Public License (formerly the GNU Library General Public License) is an FSF approved Free Software license designed as a compromise between the GNU General Public License and simple permissive licenses such as the BSD license and the MIT License. ...
A website (alternatively, Web site or web site) is a collection of Web pages, images, videos and other digital assets that is hosted on a Web server, usually accessible via the Internet or a LAN. A Web page is a document, typically written in HTML, that is almost always accessible...
Java is a programming language originally developed by Sun Microsystems and released in 1995. ...
Ruby is a reflective, object-oriented programming language. ...
JRuby is free software released under a three-way CPL/GPL/LGPL license. Clockwise from top: The logo of the GNU Project (the GNU head), the Linux kernel mascot Tux the Penguin, and the FreeBSD daemon Free software is a term coined by Richard Stallman and the Free Software Foundation[1] to refer to software that can be used, studied, and modified without...
The CPL (Common Public License) is a free software / open-source software license published by IBM. Its license terms have been approved by the Open Source Initiative and Free Software Foundation. ...
The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ...
GNU logo The GNU Lesser General Public License (formerly the GNU Library General Public License) is a free software license published by the Free Software Foundation. ...
JRuby is tightly integrated with Java to allow the embedding of the interpreter into any Java application with full two-way access between the Java and the Ruby code. (Compare Jython for the Python language.) Java is a programming language originally developed by Sun Microsystems and released in 1995. ...
Jython, formerly known as JPython, is an implementation of the Python programming language written in Java. ...
JRuby's lead developers are Charles Nutter [1] and Thomas Enebo [2]. In September 2006, Sun Microsystems hired them to work on JRuby full time.[1] This article does not cite any references or sources. ...
For the Manfred Mann album, see 2006 (album). ...
Sun Microsystems, Inc. ...
History
JRuby was originally created by Jan Arne Petersen, in 2001. At the time and for several years following, the code was a direct port of the Ruby 1.6 C code. With the release of Ruby 1.8, an effort began to update JRuby to 1.8 features and semantics. Since 2001, several contributors have assisted the project, leading to the current (2007) core team of four members.
The upcoming Netbeans Ruby Pack, will allow IDE development with Ruby and JRuby, as well as Rails for the two implementations of Ruby [3] [4]. A NetBeans Ruby Pack preview is available since Milestone 7 release of NetBeans 6. NetBeans refers to both a platform for the development of Java desktop applications, and an integrated development environment (IDE) developed using the NetBeans Platform. ...
Ruby is a reflective, dynamic, object-oriented programming language. ...
Ruby on Rails is a web application framework, released in 2004, that aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. ...
Rails JRuby supports Rails since version 0.9 (May 2006) [5] [6], with the ability to execute RubyGems and WEBrick. Since the hiring of the two lead developers by Sun, Rails support (in the areas of compatibility with the reference implementation and speed) has improved greatly. Tests of version 1.0 of JRuby execute successfully almost 100% of Rails own specific test cases[2] [3]. Ruby on Rails is a web application framework, released in 2004, that aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. ...
RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries (in a self-contained format called gems), a tool to easily manage the installation of gems, and a server for distributing them. ...
WEBrick is an Ruby library providing simple HTTP web server services. ...
Design Since early 2006, the current JRuby core team has endeavored to move JRuby beyond being a simple C port, to support better performance and to aid eventual compilation to Java bytecode. To support this end, the team set an ambitious goal: to be able to run Ruby on Rails unmodified using JRuby. In the process of achieving this goal, the JRuby test suite expanded to such extent that the team gained confidence in the "correctness" of JRuby. As a result, toward the end of 2006 and in the beginning of 2007, they began to commit much more complicated redesigns and refactorings of JRuby's core subsystems. Ruby on Rails is a web application framework, released in 2004, that aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. ...
JRuby is designed to work as a mixed-mode virtual machine for Ruby, where code can be either interpreted directly, just-in-time compiled at runtime to Java bytecode, or ahead-of-time compiled to Java bytecode before execution. At present (Jan 2007) only the interpreted mode supports all Ruby's constructs, but a partial AOT/JIT compiler is available and improving. The compiler design allows for interpreted and compiled code to run side-by-side, as well as decompilation to reoptimize and outputting generated bytecode as Java class files. In computing, just-in-time compilation (JIT), also known as dynamic translation, is a technique for improving the performance of bytecode-compiled programming systems, by translating bytecode into native machine code at runtime. ...
An Ahead-of-Time (AOT) compiler is a compiler that implements Ahead of Time Compilation. ...
An interpreter is a computer program that executes other programs. ...
An Ahead-of-Time (AOT) compiler is a compiler that implements Ahead of Time Compilation. ...
In computing, just-in-time compilation (JIT), also known as dynamic translation, is a technique for improving the performance of bytecode-compiled programming systems, by translating bytecode into native machine code at runtime. ...
In computer science, dynamic recompilation (sometimes abbreviated to dynarec) is a feature of some emulators and virtual machines, where the system may recompile some part of a program during execution. ...
Java bytecode is the form of instructions that the Java virtual machine executes. ...
Installation JRuby can be installed as a standalone interpreter: - The user must download the binary package from JRuby's CodeHaus page.
- The user must unzip it, and run the jruby batch.shell file from the bin directory, passing the name of a Ruby (*.rb) file as a command line argument.
- The user may need to set environment variables such as JAVA_HOME and JRUBY_HOME, but if so, the batch/script file will give appropriate error messages.
JRuby can be embedded as a scripting engine in a Java application: Environment variables are a set of dynamic values that can affect the way running processes will behave on a computer. ...
- Decompress the download file.
- Copy jruby.jar into the directory <JAVA_PATH>jrelibext or add it to CLASSPATH.
The Classpath is an argument set on the command-line that tells the Java Virtual Machine where to look for user-defined classes and packages in Java programs. ...
JRuby Programming JRuby's language syntax is identical to Ruby's. JRuby is reflective, object-oriented, with brief, more human-readable code. In JRuby, every bit of data is an object, even those that are commonly primitives in other languages, such as the integer. Ruby is a reflective, object-oriented programming language. ...
More JRuby documentation can be found at The JRuby Wiki.
Ruby meets Java JRuby is essentially the Ruby interpreter, except this version is written entirely in Java. JRuby features some of the same concepts, including object-oriented programming, and duck-typing as Ruby. The key difference is that JRuby is tightly integrated with Java, and can be called directly from Java programs. Java is a programming language originally developed by Sun Microsystems and released in 1995. ...
Object-oriented programming (OOP) is a programming paradigm that uses objects to design applications and computer programs. ...
In computer science, duck typing is a form of dynamic typing in which a variables value itself implicitly determines what the variable can do. ...
Calling Java from JRuby One powerful feature of JRuby is its ability to invoke the classes of the Java Platform. To do this, one must first load JRuby's Java support, by calling "require 'java'". The following example creates a Java JFrame with a JLabel using "include_class": The Java platform is the name for a computing environment, or platform, from Sun Microsystems which can run applications developed using the Java programming language and set of development tools. ...
require 'java' include_class "javax.swing.JFrame" include_class "javax.swing.JLabel" frame = JFrame.new() frame.getContentPane().add(JLabel.new("This is an example.")) frame.pack() frame.setVisible(true) As of JRuby 0.9.1 it is also possible forgo "include_class": require 'java' frame = javax.swing.JFrame.new() frame.getContentPane().add(javax.swing.JLabel.new("This is an example.")) frame.pack() frame.set_visible(true) JRuby also allows you to call Java code using the more Ruby-like underscore_method_naming and to refer to JavaBean properties as attributes: JavaBeans are classes written in the Java programming language. ...
frame.content_pane.add(label) frame.visible = true
Calling JRuby from Java JRuby can just as easily be called from Java, using either the JSR 223[4] Scripting for Java 6 or the Apache Bean Scripting framework. More information on this is available in the JRuby Wiki. The Bean Scripting Framework is a method of allowing the use of scripting in Java code. ...
Performance JRuby is still slower than the C Ruby Reference implementation [7]. Ruby is a reflective, dynamic, object-oriented programming language. ...
In computing, a reference implementation (or, infrequently, sample implementation) is a software example of a standard for use in helping others implement their own versions of the standard. ...
For example, serving up Rails requests in the standard interpreted mode, JRuby is 50% to 70% slower than C Ruby 1.8. Ruby on Rails is a web application framework, released in 2004, that aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. ...
In computer programming, an interpreted language is a programming language whose programs may be executed from source form, by an interpreter. ...
Ruby is a reflective, dynamic, object-oriented programming language. ...
When using Ruby 1.9 (YARV) benchmarks on Java 6, JRuby is 4 times slower than Ruby (including startup time), but when removing a few specific test cases, it is only 50% slower than Ruby 1.8[5]. YARV (Yet Another Ruby VM) is the new bytecode interpreter that is being developed for the Ruby programming language by Koichi Sasada. ...
Java Platform, Standard Edition or Java SE (formerly known up to version 5. ...
In the upcoming JIT mode (also including startup time), JRuby achieves 93% of Ruby speed [6]. In computing, just-in-time compilation (JIT), also known as dynamic translation, is a technique for improving the performance of bytecode-compiled programming systems, by translating bytecode into native machine code at runtime. ...
See also Ruby is a reflective, dynamic, object-oriented programming language. ...
Ruby on Rails is a web application framework, released in 2004, that aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. ...
BeanShell is a Java scripting language, invented by Pat Niemeyer. ...
Groovy is an object-oriented programming language for the Java Platform as an alternative to the Java programming language. ...
Java Tcl, abbreviated as JACL, is a Java-based, open source, implementation of the Tcl scripting language. ...
Jython, formerly known as JPython, is an implementation of the Python programming language written in Java. ...
YARV (Yet Another Ruby VM) is the new bytecode interpreter that is being developed for the Ruby programming language by Koichi Sasada. ...
References - ^ Jacki (2006-09-07). Sun Welcomes JRuby Developers. On the Record. Retrieved on 2006-09-09.
- ^ 98,6% of the 2807 Rails specific test cases execute successfully, see JRuby Rails support
- ^ JRuby 0.9.8 Released
- ^ JSR 223: Scripting for the Java Platform Specification Request
- ^ thread_create_join, sieve, count_words, mandelbrot, and answer, 5 tests out of 39
- ^ Also after removing a few specific tests : factorial, mandelbrot, and thread_create_join, 3 tests out of 25.
For the Manfred Mann album, see 2006 (album). ...
September 9 is the 252nd day of the year (253rd in leap years) in the Gregorian calendar. ...
Ruby on Rails is a web application framework, released in 2004, that aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. ...
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