libjava/scripts/showval.java

   1 // Show a value given class name and constant name.
   2
   3 /* Copyright (C) 2000  Free Software Foundation
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 /* Written by Tom Tromey <tromey@redhat.com>.  */
  12
  13 // Use like this to print a `static final' value (integers only, not
  14 // strings yet):
  15 //   java showval java.awt.geom.AffineTransform.TYPE_IDENTITY
  16 // Prints result like:
  17 //   TYPE_IDENTITY = 0
  18 // In conjunction with a keyboard macro you can do a number of
  19 // constants very easily.
  20
  21 import java.lang.reflect.*;
  22
  23 public class showval
  24 {
  25   public static void main (String[] args)
  26   {
  27     int ch = args[0].lastIndexOf ('.');
  28     String className = args[0].substring (0, ch);
  29     String constName = args[0].substring (ch + 1);
  30     try
  31       {
  32         Class klass = Class.forName (className);
  33         Field field = klass.getField (constName);
  34         System.out.println (constName + " = " + field.getInt (null));
  35       }
  36     catch (Throwable _)
  37       {
  38         System.out.println (_);
  39       }
  40   }
  41 }