JarLook Check that class target versions are as expected in a Java jar.
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JarLook Tags

version verify target verify version target version check version

JarLook Description

Check that class target versions are as expected in a Java jar. JarLook is a great library that allows you to check a Java jar in order to make sure all the javac -target versions of the class files are what you expect. Currently, only version numbers 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 and 1.6 are supported. The program does not currently test minor version numbers. Why would you use this utility? To make sure that a jar intended to run under an old 1.1 JVM contains no classes accidentally compiled with javac -target 1.5. Passing this test does not guarantee the jar will work on an old JVM. The jar still might use methods not bundled with old JVMs. This should catch however, classes normally compiled with target 1.1 that were accidentally compiled with 1.5 as a side effect of compiling some 1.5 class. NOTE: JarLook is for non military use only. Requirements: · Java 1.5 or later

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