NumberUtils.createNumber() behaves inconsistently with NumberUtils.isNumber()

The NumberUtils.createNumber() method fails to check for multiple trailing characters, and as a result, it returns a value even though NumberUtils.isNumber() indicates that it should not. For example:

boolean isNumber = NumberUtils.isNumber("81.5514DD");   // returns false

Number numValue = NumberUtils.createNumber("81.5514DD");  // returns a Double value, 81.5514

I would expect the createNumber() method to throw a NumberFormatException in this case.