programming requires a time-predictable standard library.
to simplify means to eliminate the unnecessary so that the
necessary may speak."
Hofmann, Introduction to the
Javolution real-time goals are simple: To make your application faster and more time predictable!
- Minimalistic - Collection classes,
supporting custom views,
closure-based iterations, map-reduce paradigm, parallel computations, etc.
- Optimized - To reduce the worst case execution time documented through
- Innovative - Fractal-based structures to maintain
high-performance regardless of the size of the data.
- Multi-Cores Ready - Most parallelizable
classes (including collections) are either mutex-free (atomic)
or using extremely short locking time (shared).
- OSGi Compliant - Run as a bundle or as a standard library. OSGi
allow cross cutting concerns (concurrency, logging, security, ...) to be addressed at run-time
through OSGi published services without polluting the application code
(Separation of Concerns).
- Interoperable - Struct and
Union base classes for
direct interfacing with native applications. Development of the Javolution C++ library
to mirror its Java counterpart and makes it easy to port any Java application
to C++ for native compilation (maven based) or to write Java-Like code directly in C++
(more at Javolution C++ Overview)).
- Simple - You don't need to know the hundreds of new Java 8 util.* classes,
most can be built from scratch by chaining Javolution
No need to worry about configuration,
immutability or code bloating !
- Free - Permission to use, copy, modify, and distribute
this software is freely granted, provided that copyright notices are preserved
- Javolution classes
are simple to use, even simpler than most JDK classes.
You don't need to guess the capacity of a
FastTable or a
size expand gently without ever incurring expensive resize/copy or rehash
- Developers may achieve true separation of
concerns (e.g. logging, configuration) through Context Programming
or by using classes such as Configurable.
- Javolution classes
are fast, very fast (e.g. Text
O[Log(n)] instead of
O[n] for standard
- All Javolution
classes are hard real-time compliant with
- Javolution makes it easy for
to take advantage of multi-processors systems.
- Javolution's real-time collection classes
can be used in place of most standard collection classes and provide
numerous additional capabilities.
- Any Java class can be
XML format in any
form you may want, also no need to implement Serializable or for the
platform to support serialization
provides Struct and
Union classes for
direct interoperability with C/C++ applications.
- Javolution is fully integrated with OSGi
but still can be used as a standard Java library.
- Javolution can be either a Pure
Java Solution or a Pure Native Solution (C++ mirror),
small (less than 400 KBytes jar) and fully produced through maven (Java and C++).
Javolution Version 6.0 - August 18th, 2013 (finally !)
The simplest way to use Javolution is through Maven
with the following dependency in your POM.xml
The native dynamic library (.dll or .so) is generated from the sources using the Maven Native Plugin
Released artifacts are available from the maven central repository,
all snapshots (with sources/javadoc) are deployed to the java.net repository
|The standard Java distribution is an OSGi bundle
which can also be used as standalone Java library. The C++ distribution includes a port of standard Java classes, Javolution
classes, OSGi and JUnit. Below
is the table of correspondance between the Java packages and Javolution C++ namespaces.
|C++ Port Comments/Limitations
||Includes Thread, Class<T>, Enum<T> etc.
||Holds standard Java interfaces and Javolution implementations: FastMap<T>, FastTable<T>, FastSet<T> etc
||Also provides an embedded OSGi runtime (light).
||Usage examples are provided with Javolution source distribution (module test-cpp)
Developpers may download the
test-cpp maven submodule which illustrates the use of OSGi and JUnit in C++
Both libraries (Java and C++) provide benchmark tests.
Here are the Java benchmark results and
here are the C++ native test results.
Environment: Any (Android, J2SE, Native Windows/Linux/Solaris)
Compilers: All (including Visual C++, GCC, SOLARIS Studio)
Build tool: Maven
Issues Tracking: JIRA (java.net)
Coding Standard Addendum.
Eclipse (UTF-8 Encoding)
Colapi - Maven Plugin to format/colorize Java code in API documentation.
|Articles related to
Javolution (previously known as: J.A.D.E. Java
Addition to Default Environment):
Known projects using Javolution:
Known projects having a C++ port of their Java library or specifications based on Javolution:
- Resoa - Open Source project for SOA & Cloud computing
JScience - Java Tools and Libraries for the Advancement of Sciences.
- Glimworm - I.T. Firefly CMS Product
- ALMWorks - Bug-tracking systems, Deskzilla and JIRA Client.
- Open For Business - Open source enterprise automation software project.
- RADlab - Similator for radiation detection and measurement experiments.
- jgame - Real-time and embedded gaming API.
- MathEclipse - A symbolic mathematics engine written in Java.
- JRoboOp - Java package for robotics simulation with visualization of a 3D robot model.
- JMulTi - Time Series Analysis with Java.
- JStatCom - A Software Framework for Data Based Analysis.
- OVal - Object Validation Framework.
(Let us know if your project uses Javolution
and you would like it to be listed here)
- OSGi - Included in Javolution core distribution
- JUnit - Included in Javolution core distribution
Javolution's users can also show their
support with the "Powered By Javolution" button:
this is of course
- August 18, 2013: Javolution 6.0
Includes fractal classes, Java 8 support (collections), real-time annotations,
OSGi pluggable contexts, perfometer, mirror C++ library, etc.
Most backlog issues have been fixed !
- May 6, 2007: Javolution 5.0
- September 18, 2006: Javolution 4.0
Classes renamed as per coding standard (e.g. XmlFormat => XMLFormat)
- March 3, 2005: Javolution 3.0
Introduction to context programming.
- October 4, 2004: Javolution 1.0
Spin-off of Java Addition
to Default Environment [1.0.0]