Java Lab05_Ans4

WRITE A PROGRAM TO CALCULATE THE AREA OF TRIANGLE,CIRCLE,SQUARE,AND RECTANGLE. HOWEVER,YOU NEED TO ENSURE THAT THE PRECEDING SET OF FUNCTIONALITIES MUST BE ARCHIEVED BY IMPLEMENTING ABSTRACTION.

ANSWER

abstract class Area  {
double dim1, dim2, result;

abstract void calArea();

double disArea()    {

return result;
}
}
   class Circle extends Area   {
double pie = 3.14;

public Circle(double rad)   {
dim1 = rad;

}

void calArea()  {
result= pie*dim1*dim1;
}
}

  class Rectangle extends Area   {
public Rectangle(double ln, double br)   {
dim1 = ln;
dim2 = br;
}

void calArea()   {
result = dim1 * dim2;
}
}

 claSS Square extand Area   {
public Square(double side)   {
dim1 = side;
}

void calArea()   {
result =dim1* dim1;
}
}

 class Triangle extends Area  {
public Triangle (double bas, double high)   {
dim1 = bas;
dim2 = high;
}

void calArea() {
result = (dim1 * dim2 ) /2;

  }
}
  public class Area calculator   {
public static void main (String[] args)  {
Square sobj = new Square (44.5);
sobj.calArea();
System.out.println("The area of square is " + sobj.disArea());

Rectangle robj = new Rectangle (23.4, 12);
robj.calArea();
System.out.println("The area of rectangle is " + robj.disArea());


Circle cobj = new Circle (5.7);
cobj.calArea();
System.out.println("The area of circle is " + cobj.disArea());


Triangle tobj = new Triangle (20, 20);
tobj.calArea();
System.out.println("The area of triangle is " + tobj.disArea());
}
}