Question $3(15$ marks$)$

a$)$ Explain the steps of connecting a java application to a database.

$(7$ marks$)$

b$)$ Using java programming language, implement a class that will allow a user to connect a java program to an SQL database hosted locally on your machine.

$(8$ marks$)$

Question $4(15$ marks$)$

a$)$ Explain the difference between an Interface and an Abstract Class.

$(2$ marks$)$

b$)$ Use a java program to explain how abstraction is implemented in OOP.

i$.$ Using an Interface.

$(2$ marks$)$

ii$.$ Using an Abstract Class

$(3$ marks$)$

c$)$ Explain the difference between the terms compile$-$time and runtime.

$(2$ marks$)$

d$)$ Use a java program to differentiate between runtime and compile$-$time polymorphism

$(6$ marks$)$

Question $5(15$ marks$)$

a$)$ Use java programming language to: $-$

$(10$ marks$)$

Create a custom jFrame called Login

In the constructor; Set the title of the ;Frame to Login, set the size of the jFrame and the default operation for when some clicks on close.

Create a label that notifies a user to enter the password. Create a password field for the user to enter the password. Create a button for the user to click on to $log$ in$.$ Add the last three components to jframe.

Display Jframe

b$)$ Describe what is meant by exception handling, State two types of exceptions in java's exception handling mechanism.

$(3$ marks$)$

c$)$ List any four examples of situations where exception handling is necessany.

$(2$ marks$)$