JMathLib is meant to be a clone of Matlab, but written entirely in java. A library of mathematical functions designed to be used in evaluating complex expressions and display the results graphically. It will be used either interactively through a terminal like window or to interpret script files. It can be extended very simply with m-files an java classes. It is intended to be a java version of programs such as MatLab, Octave, FreeMat and Scilab