Feedback from my failure: 1. The toBinary(int) method needs to be implemented as outlined in the task conditions. 2. The toDecimal(String) method needs to be implemented as outlined in the task conditions. Further, it says, "Be sure that the toDecimal(String) method returns 0 if it receives an empty string or null as input." 3. I checked on another number set, 65 and 1000001 and it worked fine.