Decompile a Jar file

If you have a *.jar file that contains *.class files, then use the following to decompile and provide *.java files.

docker run --rm -it -u $(id -u):$(id -g) \
  -v "${PWD}:/data" -w /data             \
  jgiannuzzi/jd-cmd                      \
  ${jar_file}                            \
  -od ${output_dir}