Write a method, getEmailUserName, that is passed a String argument that is an email address and returns the user-name part.

LANGUAGE: Java

CHALLENGE:

Write a method, getEmailUserName, that is passed a String argument that is an email address and returns the user-name part.
So if “[email protected]” is passed, the method returns “mozart”.
Assume that the argument will always be a correctly formatted email address.

SOLUTION:

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