Using Java Language answer the following questions.

1. Implement a recursive method that takes as parameters a String s and a non-negative integer I and returns a String that has s repeated I times. For example, if the given string is "CS 113" and the integer is 3 then the return value would be "CS 113 CS 113 CS 113 ". (Note that if the integer is 0, then the empty string "" should be returned.)

2. Implement a recursive method that has takes a non-negative integer parameter x. The method prints x asterisks, followed by x exclamation points.

3. Write an application that tests these methods.