Q1:

Consider the following java class:

class Student { private int student_Number; private String student_Name; public Student(int stNo,String name) { student_Number=stNo; student_Name=name; } public String getName() { return student_Name; } public int getNumber() { return student_Number; } public void setName(String st_name) { student_Name = st_name; } }

1. What are the instance variables?
2. What are the local variables?
3. What are the accessor methods?
4. What is the mutator method?

Answer:

Q2:

Consider the following java class:

public class Circle { private double radius; private String color; public Circle(){ radius=0; color = "red"; } public Circle(double r, String c){ radius=r; color = c

} public void setColor(String c){ color = c;

} public double getRadius(){ return radius; } public String getColor(){ return color; } }

Write a Tester class named CircleTester which contains the following instruction:

1. Use the first constructor to create a circle object c1.
2. Use the second constructor to create a circle object c2 where radius =15, color = Green.
3. Use the setColor method to change the color of the circle c1 to Yellow.
4. Print the radius and color of circle c2.

Note:

Include the screenshot of the program output as a part of your answer. Otherwise, you will be marked zero for this question.

Answer: