Activity - Implement a program prompts a user for their name, age, salary, hackername and email address.

1. Catches the following exceptions
   1. NumberFormatException for the salary
   2. User defined Malformed email address (See below)
   3. Allows the user to try again in either case.
2. User Class
   1. Stores user information in instance variables name, age, salary, hacker name and email address in the appropriate data type.
   2. Default constructors only
   3. Accessor and mutator methods including:
      1. boolean setSalary(String newSalary)
         1. receives a string and converts it to a number
         2. Handles the NumberFormatException.
         3. Returns true if conversion is successful and false if not.
      2. boolean setEmail(String newEmail)
         1. receives a String
         2. Tests for Malformed email address and throws MalformedEmailAddress Exception if it is malformed.
         3. Returns true if address is correctly formed, false if not.
   4. setHackerName method
      1. Use your creativity to create an algorithm that uses the data the create a hacker nickname,
      2. The nickname does not necessary have to be a pronounceable word, but that would be nice.
      3. You may want to store a bank of words to use as part of your hacker name see http://forums.windrivers.com/showthread.php?38547-Good-hacker-names for some ideas.
   5. toString method - Displays all the instance variable data in a neatly formated output

2. 6. Exception handling
      1. Email Address
         1. Check to see if an email address is valid
         2. Valid address is simply contains an @ symbol between the first and last characters of the address.
         3. If email address is malformed it throws a the User Defined MalformedEmailAddress Exception.(see below)
         4. The MalformedEmailAddress should be caught and the user given a chance to correct the address. (Think about this as its a little trickier than you think)
3. MalformedEmailAddress Exception class - Creates an error message explaining the exception.
4. UserTest
   1. Test all methods in the User class including the exceptions.
   2. To simplify the process read all data in from a Scanner as a String.