Weka 3 - Data Mining with Open Source Machine Learning Software in Java

Requirements

The following matrix shows what Java version is necessary to run a specific Weka version. It also specifies, when a changeover happened, listing date and Subversion revision (the number prefixed with r).

		Java
		1.4	1.5	1.6
WEKA	<3.4.0	X	X	X
	3.4.x	X	X	X
	3.5.x	3.5.0-3.5.2	>3.5.2 r2892, 20/02/2006	X
	3.6.x		X	X
	3.7.x		3.7.0	>3.7.0 r5678, 25/06/2009

Note:
Java 5.0 and later in combination with Linux/Gnome has problems with the default Look'n'Feel.
A workaround for the problem was introduced with version 3.4.5/3.5.0.
For more information refer to the Troubleshooting Wiki article.

From Weka 3.6.5/3.7.4 Mac OS X users will need Java for Mac OS X 10.6 Update 3 (java 1.6.0_22) or later.