Command line argument in Java

/**
   * How to use command line arguments in java program.
   */
   class CmndLineArguments {

  public static void main(String[] args) {
    int length = args.length;
    if (length <= 0) {
    System.out.println("You need to enter some arguments.");
    }
   for (int i = 0; i < length; i++) {
    System.out.println(args[i]);
   }
   }
   }