a static method called repeat that takes as its two parameters a string str and an integer n and returns a new string consisting of n copies of str. You may assume that n is positive. For example:

• repeat("Java", 3) should return the string "JavaJavaJava"

• repeat("oh!", 7) should return the string "oh!oh!oh!oh!oh!oh!oh!"

This method should not do any printing; rather, it should construct and return the appropriate string.

Hints:

• You will need to gradually build up the return value using string concatenation. To do so, we recommend that you use a variable for your return value and that you give it the empty string as its initial value:

  String result = ""; 

  This will allow you to gradually add to the result by using statements that look like the following:

  result = result + expr; 

  where expr is replaced by an appropriate expression.

• You will need to use a for loop as part of your implementation of this method.