Problem

(Swap case) Write the following method that returns a new string in which the uppercase...

(Swap case) Write the following method that returns a new string in which the uppercase letters are changed to lowercase and lowercase letters are changed to uppercase.

public static String swapCase(String s)

Write a test program that prompts the user to enter a string and invokes this method, and displays the return value from this method. Here is a sample run:

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Solutions For Problems in Chapter 9

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