public static double getDouble(Properties props, String key, double defaultValue) {
    String value = props.getProperty(key);
    if (value != null) {
      return Double.parseDouble(value);
    } else {
      return defaultValue;
    }
  }
public static double getDouble ( Properties props , String key , double defaultValue ) { String value = props . getProperty ( key ) ; if ( value != null ) { return Double . parseDouble ( value ) ; } else { return defaultValue ; } }
Load a double property.  If the key is not present, returns defaultValue.