Question: Finally, create the method checkDob, which validates the date of birth. If the String parameter is empty, the method should add Date of Birth required
Finally, create the method checkDob, which validates the date of birth. If the String parameter is empty, the method should add "Date of Birth required to the error label. If the date of birth is invalid, the method should add "Date of Birth format: ######## or ###### to the error label. Inside the handle method, call this method on inLuckyNum
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