This project allows a quick way to inspect the class versions of either a jar file or all jar files in a directory.
Set the arguments as a command line argument:
gradlew run -Pargs=<file>
where file is either a jar file or directory, or edit the build.gradle file and set the defaultArgs property and run:
gradlew run
Typical output is:
version: None, file: d:\repositories\functionaljava\consume\build\libs\functionaljava-consume-4.5-SNAPSHOT-javadoc.jar
version: None, file: d:\repositories\functionaljava\consume\build\libs\functionaljava-consume-4.5-SNAPSHOT-sources.jar
version: Some((52,Some(JAVA_8))), file: d:\repositories\functionaljava\consume\build\libs\functionaljava-consume-4.5-SNAPSHOT.jar
version: Some((49,Some(JAVA_5))), file: d:\repositories\functionaljava\consume\build\tmp\expandedArchives\org.jacoco.agent-0.7.1.201405082137.jar_a0mvaakmwojkgsu2oquz538ig\jacocoagent.jar