code: public boolean getBoolean(String key, boolean defaultValue) {
  		String val = getStringInternal(key);
  		if (val == null) {
  			return defaultValue;
  		} else {
  			return Boolean.parseBoolean(val);
  		}
  	}
docs: Returns the value associated with the given key as a boolean.
  
  @param key
  the key pointing to the associated value
  @param defaultValue
  the default value which is returned in case there is no value associated with the given key
  @return the (default) value associated with the given key