Reviews : Java Development Tools You Never Knew Existed :

Pivotonic JavaJar 1.1: WYSIWYG Jar Tool

JavaJar shows all of the files for the archive you are viewing in a Windows-like interface (there are even three skins to set how you want this interface to look). For each file, you will see the name, the file's original size, the compression ratio, the packed size, the last modified date (nice for checking versions of your applications) and the CRC (Cyclic Redundancy Check to prevent file corruption--part of the JAR spec). You can drag and drop these columns to set the order that makes the most sense to you, and as in Windows, you can sort by each of the columns and ascending and descending order. Double-clicking a file will allow you to view the contents of that file without extracting the entire archive. I both created archives and opened existing archives without problems.

JavaJar requires JDK 1.3 or 1.4 to run. Because it is a Java application itself, that is the only requirement. No other hardware/software recommendations are provided. JavaJar includes an Uninstall tool.

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