Command line tool to check the Java class version (The Java version it is compiled for)
Minimum Java version required to run this: 1.5
user@user ~/Dir/Dir $ java -jar java-class-version-checker-0.3.jar
Usage: java -jar java-class-version-checker-<version>.jar [-e] [-v] Path1 Path2 ..
-e Comma separated list of file extensions. e.g. jar(default),war,class,..
-v Verbosity. Valid values are 1(default) and 2
1: Prints stats: version, no. of classes, jar file and other versions of class files
found in the archive/folder
-gc(default) Group by container e.g. folder, archive
-gv Group by Java version
2: Lists all the files with version in the output
Path can be any folder or file which matches the provided extension(s)
e.g. 1. java -jar java-class-version-checker-<version>.jar Folder1WithJars Folder2WithJars
2. java -jar java-class-version-checker-<version>.jar -e jar,war,ear xyz.war abc.ear Folder2
3. java -jar java-class-version-checker-<version>.jar abc.jar
4. java -jar java-class-version-checker-<version>.jar -e class,jar abc.jar Xyz.class
FolderWithClasses FolderWithJars
Note: Except 'class' all other files (with matching extension e.g. war,zip,ear) will be
considered as compressed zip files
Examples:
user@user ~/user/MyApps $ java -jar java-class-version-checker-0.3.jar -gc ../MyApps/java-class-version-checker-0.3.jar java-class-version-checker-0.3.jar 1.5(10) ../MyApps 00s, 1 file, 10 classes Completed user@user ~/user/MyApps $ java -jar java-class-version-checker-0.3.jar -gv ../MyApps/java-class-version-checker-0.3.jar 1.5 java-class-version-checker-0.3.jar ../MyApps 00s, 1 file, 10 classes Completed user@user ~/user/MyApps $ java -jar java-class-version-checker-0.3.jar -v 2 ../MyApps/java-class-version-checker-0.3.jar 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/ProgressUpdater.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/MutableInteger.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Version.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Main$1.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Main.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Result$Failure.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Result$Success.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Result.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Scanner$1.class 1.5 ../MyApps/java-class-version-checker-0.3.jar/raju/javautils/cvc/Scanner.class 00s, 1 file, 10 classes Completed