This is a collection of general purpose Java code I have written and which I use in various projects.

• A makefile-based (also see the build system doc) generic recursive build system for mostly-Java projects. It can handle subprojects in other languages that use their own makefiles. And it includes features beyond just compilation, including documentation build, distribution packaging, and pubishing.
• CompileServer (also see the build system doc) accelerates Java builds by delegating compilation tasks to an always-running server process, thereby avoiding JVM startup costs for each complier invocation.
• Some additional developer scripts (also see the build system doc).
• A color sublibrary including a command-line colorspace conversion utility, ICCConvert, and a color scheme generation system based on [Bourges, Jean. (1997). Color Bytes. Forest Hills, New York: Chromatics Press, Inc.].
• RMIWrap, a code generator that eases the difficulty of adding RMI capability to an arbitrary Java class.
• Utilities for detecting Java version compatibility issues and working around them.
• Utilities for dealing with Java3D scene graphs outside Java3D, including a JOGL-only replacement for Java3D's GeometryArray and accessors for Java3D vertex, index, and primitive datastructures.
• a JOGL-only immediate mode renderer for Java3D scene graphs, with optimization for JOGLGeometry and Widgets that define collections of geometries, including a number of pre-defined simple shapes like SphereWidget.
• ActionMapper, a layered system for dynamic mappings from key and mouse actions to handlers.
• Some conveniences for using VT100-compatible terminals in Java, including terminal type detection, cursor placement, and text coloring.
• A log implementation that integrates with Java's standard Logger infrastructure but which also generates colored terminal output and behaves reasonably well in applet contexts.
• SuperClock, a timebase that can be accelerated or decelerated with respect to wall-clock time.
• VonaMath, a collection of (mostly geometric) short math routines I've found useful.
• An SVD driver infrastructure with JLAPACK and netlib-java backends.
• A generic prioritized damped least squares real-time numeric solver for differentiable constraint systems based on [Paolo Baerlocher and Ronan Boulic. An inverse kinematics architecture enforcing an arbitrary number of strict priority levels. The Visual Computer 20, pp 402--417, 2004].
• A 3D rigid transform library based on the exponential map parameterization for rotations, as described in [Grassia. Practical parameterization of rotations using the exponential map. Journal of Graphics Tools, 3(3):29-48, 1998], and corresponding interpolation and interaction systems.

The best way to learn about using these utilities is to read the javadoc and the source.

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Vona's Java Utils are released in precompiled source form under the GNU GPL.

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