5) Write object oriented programs to calculate the area of a
a) Circle
b) Square
c) Rectangle
d) Sphere
- In object oriented programming, program is divided into small parts called objects.
- Object oriented programming follows bottom up approach.
- Adding new data and function is easy.
- Object oriented programming provides data hiding so it is more secure.
- Object oriented programming is based on real world.
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package assignments;
/**
*
* @author 5442
*/
public class Qs5ObjectOriented {
private double l;
private double b;
public Qs5ObjectOriented(double l, double b){
this.l = l;
this.b = b;
}
public static void main(String[] args) {
Qs5ObjectOriented x = new Qs5ObjectOriented(5,6);
System.out.println("the area of circle is "+x.Circlearea()+"n The area of Square is "+x.Squarearea() +
"n the area of Rectangle is : "+x.Rectanglearea()+ "n The area of Sphere is: "+x.Spherearea());
}
public double Circlearea(){
return 2*Math.PI*l*l;
}
public double Squarearea(){
return l*l;
}
public double Rectanglearea(){
return l*b;
}
public double Spherearea(){
return 4*Math.PI*l*l;
}
}
Output of this program :
run:
the area of circle is 157.07963267948966
The area of Square is 25.0
the area of Rectangle is : 30.0
The area of Sphere is: 25.0
BUILD SUCCESSFUL (total time: 0 seconds)
