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Java > Open Source Codes > edu > rice > cs > drjava > config > BooleanOption


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33
34 package edu.rice.cs.drjava.config;
35
36 /** Class defining all configuration options with values of type Boolean.
37  * @version $Id: BooleanOption.java 3538 2006-02-16 17:38:19Z rcartwright $
38  */

39 public class BooleanOption extends Option<Boolean JavaDoc> {
40   
41   /** @param key The name of this option.*/
42   public BooleanOption(String JavaDoc key, Boolean JavaDoc def) { super(key,def); }
43   
44   /**
45    * @param s The String to be parsed.
46    * @return A Boolean instance represented by "s".
47    * @exception IllegalArgumentException if "s" is
48    * not one of the Strings "true" and "false".
49    */

50   public Boolean JavaDoc parse(String JavaDoc s) {
51     s= s.trim().toLowerCase();
52     if (s.equals("true")) return Boolean.TRUE;
53     if (s.equals("false")) return Boolean.FALSE;
54     else throw new OptionParseException(name, s, "Must be a String representing a boolean value.");
55   }
56 }
57
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