JMATRW is a Java Library to read/write *.MAT files.
In addition the aim is to support the processing of *.mat files within Apache Spark through the design and develop of an additional library called JMATRW4SPARK. The ongoing development is on the custom InputFormat for Apache Spark.
See the user manual in PDF format of the last release (JMATRW last release).
JMATRW has a LGPLv3 license.