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55  * by Daniel F. Savarese. We appreciate his contributions.
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57
58 import org.apache.oro.text.perl.*;
59
60 /**
61  *
62  * This is an example program based on a short example from the Camel book.
63  * It demonstrates substitutions by adding commas to a the string
64  * representation of an integer.
65  *
66  @author <a HREF="dfs@savarese.org">Daniel F. Savarese</a>
67  @version $Id: addCommas.java,v 1.1.1.1 2000/07/23 23:08:48 jon Exp $
68  */

69 public final class addCommas {
70
71   /**
72    * This program takes a string as an argument and adds commas to all the
73    * integers in the string exceeding 3 digits in length, placing each comma
74    * three digits apart.
75    */

76   public static final void main(String JavaDoc args[]) {
77     String JavaDoc number;
78     Perl5Util perl;
79
80     if(args.length < 1) {
81       System.err.println("Usage: addCommas integer");
82       System.exit(1);
83     }
84
85     number = args[0];
86     perl = new Perl5Util();
87
88     while(perl.match("/[+-]?\\d*\\d{4}/", number))
89       number = perl.substitute("s/([+-]?\\d*\\d)(\\d{3})/$1,$2/", number);
90
91     System.out.println(number);
92   }
93
94 }
95
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