Re: [Help-glpk] Many variables - GLPK Java

[glpk xypron]

Hello Fábio,

method enablePrints does not exist in the package libglpk-java.

There is such a method in a Java binding that was published on
bjoern.dapnet.de. This library was created for GLPK 4.8 and
has not seen any updates since then.

With libglpk_java 1.0.1 and GLPK 4.38 you can use
GLPK.glp_term_out(GLPKConstants.GLP_OFF);
to disable output.

Use the following command for loading the JNI libary:
System.loadLibrary("glpk_java");

The commands needed for compiling and executing (test.java) are:
javac -classpath /usr/share/java/glpk-java-4.38.jar test.java
java -classpath /usr/share/java/glpk-java-4.38.jar:. test marbles.mod

Consider upgrading to GLPK 4.44 and GLPK-Java 1.0.14.
Compared to 1.0.1 GLPK-Java 1.0.14 offers:
- error handling of glpk library errors as Java exception
- callbacks to control the MIP solution process
- documentation

The home of the GLPK-Java project is
http://glpk-java.sourceforge.net

You can uninstall GLPK 4.38 and GLPK-Java 1.0.1 with
sudo apt-get remove glpk-doc glpk-utils libglpk-dev libglpk0

You can download the current distribution sources with
wget ftp://ftp.gnu.org/gnu/glpk/glpk-4.44.tar.gz
wget 
http://downloads.sourceforge.net/project/glpk-java/glpk-java/glpk-java-1.0.14/glpk-java-1.0.14.tar.gz

Unzip the files with
tar -xzf glpk-4.44.tar.gz
tar -xzf glpk-java-1.0.14.tar.gz
and follow the installation instructions provided.

An example for error handling is given in
glpk-java-1.0.14/examples/java/ErrorDemo.java

> *version of the JRE*
> I have many packages installed, I did not know which would work
You can find out the java version you are using with
javac -version
java -version

You can choose the Java version you want to use with
sudo galternatives
(The package is also called galternatives.)

Galternatives will make the necessary changes to symbolic links
in /etc/alternatives.

Best regards

Xypron

-------- Original-Nachricht --------
> Datum: Sat, 12 Jun 2010 16:12:28 -0300
> Betreff: Re: [Help-glpk] Many variables - GLPK Java

> *
> I send an example attached
> 
> *
> *Are you working on a 32bit or a 64bit system?*
> 32bit system
> 
> *version of the JRE*
> I have many packages installed, I did not know which would work
> default-jre               1.6-34
> openjdk-6-jre          6b18-1.8-0ubuntu1
> sun-java-6-jre         6b18-1.8-0ubuntu1
> 
> *version of GLPK-Java (current version is 1.0.14)*
> GLPK                     1.0.1-1.1
> 
> *version of GLPK (current version is 4.44)*
> *
> GLPK                     4.38-1ubuntu1
> 

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