1) A string called dateStr represents a date in the format”mm/dd/yyyy” (e.g. “05/31/2003”). Write a method that changesdateStr to the format “dd?mm?yyyy” (e.g. “31?05?2003”) and returnsit. 2) Write a method called scrollwhich which moves the firstcharacter of a given string to the end of the string and returnsthe new string. 3) Suppose a string holds a person’s first and lastname, separated by one space. Assume the string does not haveleading spaces and end spaces. Write a method called convertNamethat takes a string with these properties and returns a stringwhere the last name is placed first, followed by a comma, then
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