Question $3(15$ marks$)$

a$)$ The GUI below is used for logging in a user into a simple Object$-$Oriented Program. Write a Java Code snippet for creating it$.$

$(8$ marks$)$

b$)$ Write a method using Java, that would implement Event Listeners in order to redirect the user to a home page $($home$.$java$)$ upon successful login$.$

$(7$ marks$)$

Question $4(15$ marks$)$

a$)$ Within an Object$-$Oriented Program there exists a method for computing the mean age for a Customer object. Using Java, write this method which takes in one parameter $($ageint$[$I$)$ which is an array of ages and returns the mean age.

$(5$ marks$)$

b$)$ When asked for their age in $($a$)$ above, a user enters a String value instead of an integer. Write a brief Java snippet that would be used to handle this exception.

$(10$ marks$)$