JnlpRunner

Handling Java WebStart applications and debugging them is not a job for the average user as it demands some specialized knowledge in the area and some befitting tools to get the job done properly. One of the utilities that can help developers and programmers in this respect is JnlpRunner.

Ready to run right out of the box, this piece of kit can be deployed either through a Windows Batch File (BAT) or via a Windows Command Script (CMD) which are available inside the archive. The interface is well organized and provides quick access to all the features of the program.

The first of the three tabs that are available in the main window will enable users to select the local path to the JNLP file or paste the URL address in case the app is accessible online only. The extra options in there make it possible to activate features like automatic sending of Internet Explorer cookies, overwriting existing archives or removing signatures from them.

Should the target application make use of Java Web Start Cache archives, the user can choose the directory from where these archives can be taken. Also, a specific main class that has to be used can be included in the process.

Adding, removing or rearranging additional ClassPath files in JAR or ZIP formats can be easily carried out from the second tab of JnlpRunner. The third one is reserved to the system properties that can be created on the spot by by defining a key and a value for each.

For those who want to get a more in depth insight on how this tool works, the documentation offers all the necessary information. On the whole, this utility serves its purpose very well and can prove a great helper for those who need to work with Java Web Start apps.