illegal argument: --

Usage:
    jps [-h] [-J<vm option>] [-l] [-q] [-m] [-v]
    jps [-h] [-J<vm option>] [-q] [-lmv]

    -h: print jps usage help
    -J: supply arguments to the Java VM running jps
    -l: print the application package name
    -q: print only the virtual machine identifiers
    -m: print the application arguments
    -v: print the Java VM arguments, including those produced automatically