MATLAB uses version 1.1 of Java, so be sure to get an environment that supports Java 1.1 (not Java 1.0, or 1.2).

On the PC, MATLAB uses Microsoft's SDK for Java version 2 (That's SDK version 2, which is a Java 1.1 environment) which can be downloaded from Microsoft (www.microsoft/java). Sun's Javasoft site (www.javasoft.com)has Java environments for Windows machines and Sun workstations, and pointers to many Java resources. Choose "Products & API's" to find the Java Development Kit 1.1. Both of these sites provide documentation of the Java language and classes. You will need their documentation to use Java since The MathWorks does not provide it.