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The org.clapper.util Java Utility Library is a library of miscellaneous utility classes and methods. As a general-purpose set of tools, this API is a conceptual extension of the JDK.

Note: I don’t use this library much any more. I do most of my JVM-based programming in Scala, rather than Java, and my Grizzled Scala library is the Scala-equivalent of this library.

However, I do ensure that this library is kept up-to-date, and if there are bugs in it, I try to fix them. If you run into a problem using this library, open an issue, and I will try to address it.


The Java Utility Library is published to the Bintray Maven repository, which is automatically linked to Bintray’s JCenter repository. (From JCenter, it’s eventually pushed to the Maven Central Repository.)

Using from Maven

If you’re building your project with Maven, just specify the artifact as a dependency:


If you cannot resolve the artifact, then add the JCenter repository:


Building with Gradle

If you’re using Gradle, the following lines should do the trick:

buildscript {
  repositories {

dependencies {
  compile group: 'org.clapper', name: 'javautil', version: '3.2.0'

Installing Manually

If you’re not using Maven or Gradle or SBT or something else reasonably sane (e.g., if you’re still using Ant), you’ll have to download the jar and its dependent jars, and install them manually.

The compiled jar is located at https://bintray.com/bmc/maven/download_file?file_path=org%2Fclapper%2Fjavautil%2F3.2.0%2Fjavautil-3.2.0.jar

This software assumes a 1.7 JDK or better, and it depends on the following third-party libraries:

However… you’re much better off using a Maven-aware build tool, such as Maven, SBT or Gradle, if you can.


Building from Source

This software builds with SBT, because I really dislike Maven, and I’m tired of fighting with Gradle.

If you’re building this library from source on a Unix-like system (including MacOS), you do not need to install SBT, however. The bin/activator script bundled with the repository will handle that for you. (If you insist on using Windows, you will have to download SBT first.)


First, clone a copy of the Git repository:

git clone git://github.com/bmc/javautil.git

Then, change your working directory to the newly-created javautil directory, and type:

bin/activator package

to compile the code. The resulting jar file will be in ./target.

If you’re using Windows, bin/activator may not work, as it is a Bash script. In that case, download and install SBT. Then, run:

sbt package

To install it in your local Maven repository, type

bin/activator publish-local

(or sbt publish-local on Windows).

Copyright and License

This library is copyright © 2004-2017 Brian M. Clapper and is released under a New BSD License.


I gladly accept patches from their original authors. Feel free to fork the GitHub repository and send me a pull request.

Note: I assume that any pull request is:

If those terms are unacceptable, then don’t send me a PR.