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Using jarnotator in ant builds

2010-08-14T10:17:23Z

Using jarnotator in an Ant build

Since jarnotator provides a Ant task it can be used directly from within Apache Ant build scripts. The Ant task provides all the jarnotator options. All in all the Ant task fairly easy to use. Analyzing your classes as part of a build is trivial.

The necessary setup to use the jarnotator task is that of any other external Ant task. The remainder of this page briefly outlines how to get started. For more detailed information please refer to the Apache Ant documentation related to the use of external Ant tasks.

Using the jarnotator maven plugin

2010-08-14T08:28:38Z

Adding jarnotator to your maven builds is a straightforward process that takes less than 5 minutes. In this short document you'll see how to add the jarnotator plugin to your maven builds and have it analyze your bytecode after every successful compilation of your code.

What jarnotator does in less than 1 minute

2010-08-19T08:33:42Z

NullPointerException-s still plague the java world. Commercial programs that throw such exceptions from time to time are unfortunately not so rare. It is here that jarnotator steps in to help addressing this problem. Described in what should amount to less than a minute worth of reading follows what jarnatotor does.

jarnotator on the command line

2010-08-16T09:01:51Z

The jarnotator tool aims at being easy to use. To that end it is also possible to invoke jarnotator on the command line. The command line tools support all the parameters as its ant task and maven2 plugin counterparts.

The command line tool is ideally suited to analyse third party jars since you are less likely to build those from source.

What is jarnotator

2010-08-11T11:06:08Z

What is jarnotator? First things first, the name: jarnotator it is the contraction of "jar annotator". Simple enough?

It is a static code analyser that works directly on java bytecode. Currently the analysis is centered around nullness handling in java programs. Where necessary the bytecode is annotated with the JSR 305 annotations. This makes it possible for the static analysis tool FindBugs (TM) to use those during its analysis and obtain more relevant results.

How to use it? It processes a classes directory or jar file directly. The result are new classes files or a new jar file containing your classes but possible annotated if needed.

jarnotator is free for both individuals or commercial use. A document regarding the licensing model with but made available on this site shortly. Right now the download area is empty, but not for long 1.0 coming soon.

You can use jarnotator in your projects in 3 ways:

the command line tool
ant task
maven2 plugin

More information will be available in later posts.

Space saved on /usr/src

2008-05-01T09:19:32Z

This text illustrates the space saved by putting you /usr/src files on a compFUSEd mount. It is worth doing this since you are not compiling 26 kernels everyday, are you?

The numbers below are obtained using zlib for the compression.

About

2008-04-29T13:30:10Z

compFUSEd is a compressed overlay filesystem that supports both transparent READ and WRITE operations. Since I did not find other compressing filesystems for Linux right [*] I wrote this thing. Thanks to FUSE and using compFUSEd you can add compression to your existing filesystem in under 5 minutes.