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  > {
40    
41    /** @param key The name of this option.*/
42    public BooleanOption(String   key, Boolean   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   parse(String   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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