Use class abstraction and encapsulation concepts to re-draw the UML class diagram of Square class that you drew in Lab 02. Discuss: Do you think the data field (side) should be declared private...

1. Use
   class abstraction and encapsulation
   concepts to re-draw the UML class diagram of Square class that you drew in Lab 02.

Discuss:

Do you think the data field (side) should be declared private (hidden)? Why?

If the data field is declared private (hidden), how the data field can be accessed from outside the class (for example, from the Test class)?

The new UML class diagram should include the getter and setter methods which deal with the data field side.

1. Create a new Java Application project called
   lab_03.


2. Copy the source files of the classes
   java
   and
   TestSquare.java
   that you created in Lab 01 and paste both source files in the default package. (you may need to fix any problems related to package declaration)


3. Open
   Square
   and
   TestSquare
   classes using NetBeans editor.


4. Use
   class abstraction and encapsulation
   concepts to modify the implementation of
   Square
   class, so the new class implementation would satisfy the class abstraction and encapsulation concepts.


5. Add any required getter and setter methods to the class
   Square.


6. Fix any compiling errors in the
   TestSquare
   class as a result of modifying the class
   Square.


7. Run the Test
   TestSquare