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Revision as of 20:10, 8 April 2019
Java offers a rich, object oriented, and platform independent environment for many applications. The core Java classes can be easily extended by many freely available libraries. GNU Octave has a java interface that allows access to Java classes from inside Octave. Thus it is possible to use existing class files or complete Java libraries directly from Octave.
Octave 3.8 or later
GNU Octave 3.8.0 incorporated the Octave Forge java package so the package is no longer necessary. If the package is installed, it will shadow the core functions making the java interface unreliable.
However, even for these versions, Octave needs to have been built with java support. Check it like so:
>> (str2num(strtok(version(), '.')) > 4 && __octave_config_info__("JAVA")) || octave_config_info ("features").JAVA ans = 1
If your installation of Octave does not have java support, it needs to be rebuilt from source. See the pages specific to your Operating System for further details.
See the Java Interface section of the Octave manual.
Legacy versions -- Octave 3.6 and older
Older versions of Octave did not have a native java interface. Instead, the Octave Forge java package was required. This needed to be installed separately via
pkg. To install, download the java package and install it with
pkg install path-to-java.tar.gz