src/jdk.jcmd/share/classes/sun/tools/jps/Arguments.java

rev 47855 : 8189102: All tools should support -?, -h and --help

*** 1,7 ****
  /*
!  * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2004, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 50,71 ****
      private boolean mainArgs;
      private String hostname;
      private HostIdentifier hostId;
  
      public static void printUsage(PrintStream ps) {
!       ps.println("usage: jps [-help]");
        ps.println("       jps [-q] [-mlvV] [<hostid>]");
        ps.println();
        ps.println("Definitions:");
        ps.println("    <hostid>:      <hostname>[:<port>]");
      }
  
      public Arguments(String[] args) throws IllegalArgumentException {
          int argc = 0;
  
          if (args.length == 1) {
              if ((args[0].compareTo("-?") == 0)
                      || (args[0].compareTo("-help")== 0)) {
                help = true;
                return;
              }
          }
--- 50,75 ----
      private boolean mainArgs;
      private String hostname;
      private HostIdentifier hostId;
  
      public static void printUsage(PrintStream ps) {
!       ps.println("usage: jps [-? -h --help]");
        ps.println("       jps [-q] [-mlvV] [<hostid>]");
        ps.println();
        ps.println("Definitions:");
        ps.println("    <hostid>:      <hostname>[:<port>]");
+       ps.println("    -? -h --help:  Print this help message and exit.");
      }
  
      public Arguments(String[] args) throws IllegalArgumentException {
          int argc = 0;
  
          if (args.length == 1) {
              if ((args[0].compareTo("-?") == 0)
+                 || (args[0].compareTo("-h")== 0)
+                 || (args[0].compareTo("--help")== 0)
+                 // -help: legacy. Undocumented.
                  || (args[0].compareTo("-help")== 0)) {
                help = true;
                return;
              }
          }