1. CS442: ADVANCED PROGRAMMING USING JAVA Lab 6: Classes and objects Computer Science Department

2. Lab Contents  Creating Classes and objects.  Private members.  Defining constructors.  Set and get methods. 2

3. Case Study… 3 Write a program composed of two classes: 1. class Square. 2. class Use_Square, which contains method main that test the different methods in the class Square.

4. UML Diagram.. 4

5. Variables and constructors.. 5 Defined variables and constructors:

6. Set and get methods … 6 Defined set and get:

7. Area & perimeter methods … 7 Computing area and perimeter of square:

8. ToString.. 8 The method toString():

9. Main Class 9

10. Sample Run.. 10