Hooper's Java Page

Progamming in Java

Some Algebra in Java

I've posted some software which I've written to do various algebraic computations in Java. You can learn more on my Java Algebra page.

Other software I have written that may be useful to someone:

I've written a java class to decide whether a polynomial in some double variables has positive or negative sign without the possibility of roundoff error.
- Download the source code: [SignDecider.tar.gz]
- View the javadoc documentation
I found writing this necessary because many geometric algorithms rely on determining what side of a line a point lies on. This needs to be done consistently, or else the algorithm may produce wrong answers. I'm sure there could be other applications.

I've written some examples.

Outside Links:

Sun's Java API
FreeHEP Java Library:
I have mainly found this library useful for its Vector Graphics package. It can output encapsulated postscript files suitable for including in journal articles.
JavaNumerics:
Lists a bunch of information about doing mathematics in Java. I have found this useful.
NetLib's complex number class

A Tip on compiling applets
In the interest of producing an applet that can be run on most computers, it is best to compile the applet for relatively old java versions. The list of release dates for the various versions may be found on Sun's website. Compilation with the "-target" option will ensure that it runs on an older java version. For example compiling with "javac -target 1.3 yourapplet.java" will produce an applet that runs on systems as old as java version 1.3.

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Last modified on August 17, 2018.

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