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<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link rel="stylesheet" type="text/css" href="html.css" />
<title>JAS Download</title>
</head>
<body class="main">
<h1>Download, installation and unit tests</h1>
<h2>Download jar-files or clone repository</h2>
<ul>
<li><p>This is JAS version: <strong>@VERSION@</strong>,
subversion revision: <strong>@SVNREV@</strong> (export at @SVNDATE@).
</p>
</li>
<li><p>The JAS classes jar-file
<a href="../@VERSION@.@SVNREV@-bin.jar">@VERSION@.@SVNREV@-bin.jar</a>
can be used the same way as any other Java archive during
compilation and execution of your Java programs.
It is compiled using Java 11 from OpenJDK.
The bytecode is dual licenced also under the Apache 2.0 licence
to allow usage in Android projects.
<br />
The source code is in
<a href="../@VERSION@.@SVNREV@-src.zip">@VERSION@.@SVNREV@-src.zip</a>
current version should compile on Java 8 and 11 (aka Java 1.8 and 1.11).
(right click on the link and chose "save link as")
<br />
The Javadoc API documentation is in
<a href="../@VERSION@.@SVNREV@-doc.zip">@VERSION@.@SVNREV@-doc.zip</a>
for current version.
</p>
</li>
<li><p>A JAS Maven compatible repository is at
<a href="http://krum.rz.uni-mannheim.de/maven-repository/" target="new"
>http://krum.rz.uni-mannheim.de/maven-repository/</a> and at
<a href="https://repo1.maven.org/maven2/de/uni-mannheim/rz/krum/" target="new"
>https://repo1.maven.org/maven2/de/uni-mannheim/rz/krum/</a>. <br />
groupId: <code>de.uni-mannheim.rz.krum</code>, artifactId: <code>jas</code>,
version (for example): <code>2.7.@SVNREV@</code>.
</p>
<!--
http://krum.rz.uni-mannheim.de/maven-repository/de/uni-mannheim/rz/krum/jas/
http://central.maven.org/maven2/de/uni-mannheim/rz/krum/jas/
-->
</li>
<li><p>The JAS Git repository is available with
</p>
<pre>
git clone http://krum.rz.uni-mannheim.de/jas.git jas
</pre>
<p>or from GitHub</p>
<pre>
git clone https://github.com/kredel/java-algebra-system jas
</pre>
</li>
<li><p>Required libraries:
<br />
<a href="../../lib/log4j-api.jar">lib/log4j-api.jar</a>,
<a href="../../lib/log4j-core.jar">lib/log4j-core.jar</a>
(from Apache Log4j version 2.17.1),
<br />
<a href="../../lib/junit-4.12.jar">lib/junit-4.12.jar</a>,
<a href="../../lib/hamcrest-core-1.3.jar">lib/hamcrest-core-1.3.jar</a>
(from Junit 4),
<br />
In case you already have these jars, just ensure they are in the
correct location (e.g. <code>../lib/</code>) or in the class path or accessible via Maven.
</p>
<p>
The jar libraries can be downloaded from the above links or
with the Ivy "resolve" target of ant, or the Maven dependencies,
when installing the JAS source code.
</p>
</li>
<li><p>Optional libraries and files:
</p>
<ul>
<li>There is a <a href="http://www.docker.com" target="deb">docker</a> specification to create
a docker image containing a runnable JAS in <a href="Dockerfile">Dockerfile</a>.
</li>
<li>A Debian package <a href="http://packages.debian.org/de/sid/libjas-java" target="deb">libjas-java</a>,
<br />
an inofficial Debian package which can be used with MathLibre
<a href="../@DEBVERSION@.@SVNREV@-all.deb" target="deb">@DEBVERSION@.@SVNREV@-all.deb</a>,
<br />
and an Ubuntu package
<a href="http://packages.ubuntu.com/search?keywords=libjas-java" target="deb">libjas-java</a>
are also avalilable.
</li>
<li><a href="../jas-mpj.jar">jas-mpj.jar</a> <br /> This JAR contains
implementations of distributed Gröbner bases using the
MPJ middle-ware (MPI Java). It requires an MPJ implementation such as
<a href="http://mpj-express.org/" target="mpj" >MPJ Express</a> or
<a href="http://fastmpj.com/" target="mpj" >FastMPJ</a>.
<br />
The Javadocs can be found <a href="../mpj/index.html" target="api">here</a>.
</li>
<li><a href="../jas-mpi.jar">jas-mpi.jar</a> <br /> This JAR contains
implementations of distributed Gröbner bases using the
Open-MPI middle-ware (with Java support). It requires an MPI implementation
such as <a href="http://www.open-mpi.org/" target="mpi" >Open-MPI</a>.
<br />
The Javadocs can be found <a href="mpi/index.html" target="api">here</a>.
</li>
<li><a href="../jas-meditor.jar">jas-meditor.jar</a>
<br />
This JAR contains the interface for JAS as an meditor engine,
see <a href="http://jscl-meditor.sourceforge.net/" target="rela">jscl-meditor</a>.
<br />
Sample script to call meditor with the JAS engine
<a href="../meditor/meditor">meditor</a>.
</li>
<li><a href="../jlinalg_adapter.jar">jlinalg_adapter.jar</a>
<br />
This JAR contains an adapter for JAS to the linear algebra library
<a href="http://jlinalg.sourceforge.net/" target="rela">JLinAlg</a> version 0.6.
<br />
The Javadocs can be found <a href="../jlinalg_adapter/index.html" target="api">here</a>.
</li>
<li><a href="../commons-math_adapter-bin.jar">commons-math_adapter-bin.jar</a>
<br />
This JAR contains an adapter for JAS to the Apache Commons Math 3.3
linear algebra library
<a href="http://commons.apache.org/math/" target="rela">Commons-Math</a>
version 3.3.
</li>
<li><a href="../jas-jython.jar">jas-jython.jar</a>
<br />
This JAR contains a scripting interface to use the
<a href="http://www.jython.org/" target="rela">jython</a>
interpreter with JAS.
</li>
<li>Android JAS App
<a href="http://krum.rz.uni-mannheim.de/ruboto-irb-jas-release.apk">Ruboto-IRB_with_JAS</a>.
<br />
You must allow "installation from untrusted sources".
<br />
The JAS App uses its JRuby scripting interface and runs within the Ruby IRB Android App
<a href="http://ruboto.org/">Ruboto</a>.
</li>
</ul>
<p> </p>
</li>
<li><p>For latest developments see <a href="jas-log.html">JAS Weblog</a>
and the <a href="git_change.log" target="top">Git change log</a>.
</p>
</li>
</ul>
<h2>Installation</h2>
<ul>
<li><p>Add the JAS jar-file and the other required jar-files
to the classpath. Start using it in your applications.
For example
</p>
<pre>
javac -classpath log4j-api-2.17.1.jar:log4j-core-2.17.1.jar:junit.jar:jas.jar:. -d . src/edu/jas/application/Examples.java
java -classpath log4j-api-2.17.1.jar:log4j-core-2.17.1.jar:junit.jar:jas.jar:. edu.jas.application.Examples
</pre>
<p>Make sure that you use the actual jars as described above, for example
<code>log4j-api-2.17.1.jar:log4j-core-2.17.1.jar:junit-4.12.jar:hamcrest-core-1.3.jar</code>
</p>
</li>
<li><p>If you want to develop with JAS, then extract the
jar-file in a new directory
<code>jar -xvf jas-[version]-src.jar</code>
</p>
</li>
<li><p>JAS is currently developed for Java 11 (OpenJDK).
It may eventually not compile under Java 8 (OpenJDK 1.8).
It will <b>no more</b> compile under Java 6 (OpenJDK 1.6)
or older versions.
</p>
</li>
<li><p>Among the extracted files, there is an Ant build script
<code>build.xml</code>
and also a Gnu make file
<code>Makefile</code>.
<br />
To use Ant, you must edit the <code>build.xml</code> file and
adjust the <code>lib</code> property to point to the directory
where you downloaded the jar files.
Also be sure to use the correct JDK version, e.g. via setting the
<code>JAVA_HOME</code> environment variable.
<br />
To use the Gnu make file, you must edit the <code>Makefile</code>
and adjust the <code>JDK</code> and the <code>LIBPATH</code> variables.
</p>
</li>
<li><p>Most useful Ant targets:
<br />
<code>ant resolve</code> fetch the required libraries (log4j2, junit) with Ivy,
<br />
<code>ant compile</code> changed Java files are compiled,
<br />
<code>ant recompile</code> all Java files are compiled,
<br />
<code>ant test</code> run all JUnit tests,
<br />
<code>ant run -Dclass=edu.jas.'package'.'class'</code> run the respective class,
<br />
<code>ant clean</code> remove backup files,
<br />
<code>ant distclean</code> remove all class files,
<br />
<code>ant doc</code> create the Javadocs.
</p>
</li>
<li><p>Most useful make-file targets:
<br />
<code>make "class"</code> run the <code>main()</code> method of the class,
<br />
e.g. <code>make edu.jas.poly.Examples</code> run
the class <code>Examples</code>.
</p>
</li>
</ul>
<h2>Unit tests with JUnit</h2>
<ul>
<li><p>Unit tests can be run with the "test" target for ant, e.g.
<code>ant test</code>
</p>
</li>
<li><p>The output of the unit tests is collected in the directory
<code>test</code> for inspection.
</p>
</li>
<li><p>The test units work mainly with generated random polynomials.
The parameters are choosen such that the resulting Groebner bases
are not to hard to compute.
However some random polynomials may be to big and the running time
may occasionally be several minutes (but not hours).
<br />
On the other hand random polynomials may sometimes be zero or one.
If such input does not make sense the test will fail. I.e. some
tests will fail from time to time, but not for repeated execution
of the test. So if a test fails rerun the test a few times.
</p>
</li>
</ul>
<h2><a name="docu">Documentation</a></h2>
<ul>
<li><p>The JAS documentation is contained in the jar files
<code>jas-[version]-src.jar</code> and <code>jas-[version]-doc.jar</code>.
Extract the jar files and start exploring with any browser
from the <code>index.html</code> file in the main directory.
</p>
</li>
<li><p>The JAS javadoc API documents and the jython documents
can also be browsed online:
<a href="api/index.html" target="api">API Javadocs</a>,
<a href="jython/index.html" target="jython">Epydoc of jas.py</a> and
<a href="jruby/index.html" target="jruby">Rdoc of jas.rb</a>.
</p>
</li>
<li><p><a href="../README" target="main" >README</a> and licencing:
<a href="COPYING.jas" target="gpl" >COPYING.jas</a> (GPL)
or
<a href="COPYING.lgpl.jas" target="gpl" >COPYING.lgpl.jas</a> (LGPL)
</p>
</li>
</ul>
<h2><a name="log">Logging</a></h2>
<ul>
<li><p>JAS uses <a href="https://en.wikipedia.org/wiki/Log4j">Apache Log4j</a>
to track progress in computations and
inform about problematic or erroneous program states.
Since JAS 2.6 it uses <b>Log4j 2.x</b>.
</p>
</li>
<li><p>The configuration is in file <code>log4j2.properties</code>.
Per deault the logging level is at <b>ERROR</b> so that only minimal
logs are produced.
To obtain more detailed information or store the logs to files,
please configure the desired properties in the above file.
</p>
<p>This configuration file is no more contained in the binary jars
<code>jas-bin.jar</code> or <code>jas-[version].jar</code> to allow
usage of other compatible logging frameworks.
</p>
<p>The old configuration of Log4j version 1 via
<code>BasicConfigurator.configure()</code> is no more supported.
</p>
</li>
<!--li><p>In case you can not use Apache log4j for some reason, there is an
adaptor package <a href="../mylog.jar">mylog.jar</a>
which delegates all logging calls to native Java logging.
</p>
<p>For Android there is the adaptor package <a href="../droidlog.jar">droidlog.jar</a>
which delegates all logging calls to native Android logging.
</p>
</li-->
</ul>
<h2><a name="eclipse">Usage</a> with the Eclipse IDE</h2>
<p>The JAS source distribution can also be compiled and used from the
Eclipse integrated development environment.
</p>
<p>Instructions to install the JAS source:</p>
<ol>
<li>Download the JAS source jar and unpack to some directory,
or git clone the repository to some directory
</li>
<li>Download the Log4j2 and the Junit jar files
</li>
<li>Start eclipse
</li>
<li>Create a new project from "existing source"
</li>
<li>Specify the source directory <code>src</code> contained the directory from 1.
</li>
<li>Add the jars from 2. to the project libraries as "external JARs"
</li>
<li>Create a new project or use your default project
</li>
<li>In the project properties add as "required project"
the JAS project from 4.
</li>
</ol>
<p>Instructions to install the JAS binary:</p>
<ol>
<li>Download the JAS binary jar file
</li>
<li>Download the Log4j2 and the Junit jar files
</li>
<li>Start eclipse
</li>
<li>In your projects properties add the jar files
from 1. and 2. to the project libraries as "external JARs"
</li>
</ol>
<p>Create and edit a sample java programm which uses the JAS API.
E.g. the following sample computes the first ten Legendre polynomials.
</p>
<pre>
import java.util.List;
import java.util.ArrayList;
import edu.jas.arith.BigRational;
import edu.jas.poly.GenPolynomial;
import edu.jas.poly.GenPolynomialRing;
public class mytests {
public static void main(String[] args) {
BigRational fac = new BigRational();
String[] var = new String[]{ "x" };
GenPolynomialRing<BigRational> ring
= new GenPolynomialRing<BigRational>(fac,1,var);
int n = 10;
List<GenPolynomial<BigRational>> P
= new ArrayList<GenPolynomial<BigRational>>(n);
GenPolynomial<BigRational> t, one, x, xc;
BigRational n21, nn;
one = ring.getONE();
x = ring.univariate(0);
P.add( one );
P.add( x );
for ( int i = 2; i < n; i++ ) {
n21 = new BigRational( 2*i-1 );
xc = x.multiply( n21 );
t = xc.multiply( P.get(i-1) ); // (2n-1) x P[n-1]
nn = new BigRational( i-1 );
xc = P.get(i-2).multiply( nn ); // (n-1) P[n-2]
t = t.subtract( xc );
nn = new BigRational(1,i);
t = t.multiply( nn ); // 1/n t
P.add( t );
}
for ( int i = 0; i < n; i++ ) {
System.out.println("P["+i+"] = " + P.get(i) );
}
}
}
</pre>
<h2>Using the <a name="jython">Jython</a> interpreter</h2>
<ul>
<!--li><p>Set up your <code>.jythonrc</code> file, e.g. see the sample code in
<a href="../sample.jythonrc" target="py">sample.jythonrc</a>.
</p>
</li-->
<li><p>Be sure you have downloaded the above libraries
<code>log4j-api.jar, log4j-core.jar, junit-4.12.jar, hamcrest-core-1.3.jar</code>,
and <code>jas*-bin.jar</code>.
JAS-@VERSION@ is using and has been tested with Jython 2.7.0.
</p>
</li>
<li><p>The main file to interface to the JAS library is
<a href="../examples/jas.py" target="py">jas.py</a>.
It must be imported by other Python files.
HTML documents of the interface can be found
<a href="jython/index.html" target="jython">here</a>.
</p>
</li>
<!--li><p>If jython cannot find the JAS classes, try to put the jas.jar also
into the CLASSPATH or unpack the jar into the directory you are
starting jython (also to get the correct version of .py files).
</p>
</li-->
<li><p>Start using JAS, e.g.
</p>
<pre>
jython -J-cp log4j-api.jar:log4j-core.jar:junit-4.12.jar:hamcrest-core-1.3.jar:. examples/trinks.py
</pre>
<p>The
<a href="../examples/trinks.py" target="py">examples/trinks.py</a>
contains an Groebner base example named after its proposer Mr. Trinks.
The file runs a sequential, a parallel and a distributed version
of the Groebner base algorithms.
</p>
</li>
<li><p>For further discussion of the JAS jython interface
see
<a href="guide.html" target="main">User guide</a>.
</p>
</li>
</ul>
<h2>Using the <a name="jruby">JRuby</a> interpreter</h2>
<ul>
<li><p>Be sure you have downloaded the above libraries
<code>log4j-api.jar, log4j-core.jar, junit-4.12.jar, hamcrest-core-1.3.jar</code>,
and <code>jas*-bin.jar</code>.
JAS-@VERSION@ is using and has been tested with JRuby 1.7.23 (Ruby 1.9.3 compatible)
</p>
</li>
<li><p>The main file to interface to the JAS library is
<a href="../examples/jas.rb" target="rb">jas.rb</a>.
It must be required by other Ruby files.
HTML documents of the interface can be found
<a href="jruby/index.html" target="jruby">here</a>.
</p>
</li>
<li><p>Start using JAS, e.g.
</p>
<pre>
jruby -J-cp log4j-api.jar:log4j-core.jar:junit-4.12.jar:hamcrest-core-1.3.jar:. examples/trinks.rb
</pre>
<p>The
<a href="../examples/trinks.rb" target="rb">examples/trinks.rb</a>
contains an Groebner base example named after its proposer Mr. Trinks.
The file runs a sequential, a parallel and a distributed version
of the Groebner base algorithms.
</p>
</li>
<li><p>For further discussion of the JAS scripting interface
see
<a href="guide.html" target="main">User guide</a>.
</p>
</li>
</ul>
<h2>Using the <a name="ruboto-irb-jas">Ruboto-IRB-JAS</a> Android application</h2>
<p style="color: red">
The App has been developed for JAS version 2.5 on Android 5 and is
not working on current Android versions (since 2019).
</p>
<ul>
<li><p>Be sure you have installed the above Android application package
<code>ruboto-irb-jas-release.apk</code>.
It contains all required libraries and scripts.
JAS-2.5 has been tested with Android 2.3 and 4.1 and is using
JRuby 1.6.4 (Ruby 1.8.7 & 1.9.2 compatible)
</p>
</li>
<li><p>The JAS app uses the Ruby IRB <a href="http://ruboto.org/">Ruboto</a> for Android.
This is just a Ruby interpreter running on Android together with a text editor.
So all JAS JRuby scripts can be run in this environment.
The JAS Java programs are included in compiled and transformed Dalvik "dex" format.
Up to now, no functional problems have been encountered, i.e. all JAS Java code runs.
However, due to limitations in CPU speed and memory on mobile phones or tablets
eventually not all examples and problems will execute.
In 2012, comparison of a two year old Android tablet (1 GHz, 0.5 GB)
and a three year old PC (3 GHz, 4 GB) show that the examples run
about 5 times slower than on the PC.
</p>
</li>
<li><p>The main Ruboto screen with the "trinks.rb" example and its output looks as follows.
Also the arbitrary precision numbers arithmetic works on Android.
</p>
<p><a href="../images/device-2012-11-18-jas-trinks.png" ><img src="../images/device-2012-11-18-jas-trinks-thumb.png" alt="screen shot" /></a>
<a href="../images/device-2012-11-18-jas-trinks-out.png" ><img src="../images/device-2012-11-18-jas-trinks-out-thumb.png" alt="screen shot"/></a>
<a href="../images/device-2012-11-18-jas-trinks-out-big.png" ><img src="../images/device-2012-11-18-jas-trinks-out-big-thumb.png" alt="screen shot"/></a>
</p>
<p>The list of examples can be accessed via the "scripts" button.
</p>
<p><a href="../images/device-2012-11-18-jas-examples.png" ><img src="../images/device-2012-11-18-jas-examples-thumb.png" alt="screen shot"/></a>
</p>
</li>
<li><p>For further discussion of the JAS scripting interface
see
<a href="guide.html" target="main">User guide</a>.
</p>
</li>
</ul>
<hr />
<address><a name="contact"
href="mailto:kredel@at@rz.uni-mannheim.de">Heinz Kredel</a>
</address>
<p>
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