/**
* Area Calculator
*/
import java.util.*;
class Area
{
Scanner sc = new Scanner(System.in);
double areaOfShape;
/**
* Defaule Constructor to initialize data members of class Area
*/
public Area()
{
areaOfShape=0.0d;
}
/**
* Menu method to display menu options to user and accept user
* choice
*/
private void menu(){
System.out.println("\n\t\t\t _____________________________________");
System.out.println("\n\t\t\t Press 1 for Area of Rectangle");
System.out.println("\n\t\t\t Press 2 for Area of Circle");
System.out.println("\n\t\t\t Press 3 for Area of Square");
System.out.println("\n\t\t\t Press 4 for Area of Triangle");
System.out.println("\n\t\t\t Press 5 for Area of Parallelogram");
System.out.println("\n\t\t\t Press 6 for Area of Trapezoid");
System.out.println("\n\t\t\t Press 7 for Area of Elipse");
System.out.println("\n\t\t\t Press 8 for Surface Area of Cube");
System.out.println("\n\t\t\t Press 9 for Surface Area of Cone");
System.out.println("\n\t\t\t Press 10 for of Exit");
System.out.println("\n\t\t\t _____________________________________");
System.out.print("\n\t\t\t Please Enter Your Choice: ");
try{
sc=new Scanner(System.in);
int choice = sc.nextInt();
if(choice<1 || choice>10){
System.out.println("\t\t\t Please Enter Numbers between 1 to 4 Only..");
menu();
}
operateMenu(choice);
}
catch(InputMismatchException e){
System.out.println("\t\t\t Please Enter Numbers Only..");
sc.close();
menu();
}
}
/**
* OperatMenu method to implement menu options using switch case.
*/
private void operateMenu(int choice){
try{
switch(choice){
case 1:
System.out.print("\n\t\t\t Enter Length of Rectangle : ");
double length = sc.nextDouble();
System.out.print("\n\t\t\t Enter Breadth of Reactangle : ");
double breadth = sc.nextDouble();
area(length, breadth);
break;
case 2:
System.out.print("\n\t\t\t Enter radius of circle : ");
double r = sc.nextDouble();
area(r);
break;
case 3:
System.out.print("\n\t\t\t Enter side of Square : ");
double s = sc.nextDouble();
areaOfSquare(s);
break;
case 4:
System.out.print("\n\t\t\t Enter base of Triangle : ");
double base = sc.nextDouble();
System.out.print("\n\t\t\t Enter height of Triangle : ");
double height = sc.nextDouble();
areaOfTriangle(base, height);
break;
case 5:
System.out.print("\n\t\t\t Enter base of Parallelogram : ");
double pbase = sc.nextDouble();
System.out.print("\n\t\t\t Enter vertical height of Parallelogram : ");
double pheight = sc.nextDouble();
areaOfParallelogram(pbase, pheight);
break;
case 6:
System.out.print("\n\t\t\t Enter length of 1st parallel sides of Trapezoid : ");
double ta = sc.nextDouble();
System.out.print("\n\t\t\t Enter length of 2nd parallel sides of Trapezoid : ");
double tb = sc.nextDouble();
System.out.print("\n\t\t\t Enter height of the Trapezoid : ");
double th = sc.nextDouble();
areaOfTrapezoid(ta, tb, th);
break;
case 7:
System.out.print("\n\t\t\t Enter value of a axis of Ellipse : ");
double ea = sc.nextDouble();
System.out.print("\n\t\t\t Enter value of b axis of Ellipse : ");
double eb = sc.nextDouble();
areaOfElipse(ea,eb);
break;
case 8:
System.out.print("\n\t\t\t Enter value of edge of Cube : ");
double ce = sc.nextDouble();
surfaceAreaOfcube(ce);
break;
case 9:
System.out.print("\n\t\t\t Enter value of radius of Cone : ");
double cr = sc.nextDouble();
System.out.print("\n\t\t\t Enter value of height of Cone : ");
double ch = sc.nextDouble();
surfaceareaOfCone(cr,ch);
break;
case 10: System.out.println("\n\n\t\t\t\t .......Thank You......");
System.exit(0);
}
}
catch(InputMismatchException e){
System.out.println("\t\t\t Please Enter Numbers Only..");
operateMenu(choice);
}
}
/**
* overloaded area method to calculate area of rectangle
*/
private void area(double l, double b){
areaOfShape = l*b;
System.out.println("\n\t\t\t Area of Reactangle :" +areaOfShape );
checkCotinue();
}
/**
* overloaded area method to calculate area of circle
*/
private void area(double r){
areaOfShape = 3.14*r*r;
System.out.println("\n\t\t\t Area of Circle :" +areaOfShape );
checkCotinue();
}
/**
* areaOfSquare(double s) method to calculate area of Square
*/
public void areaOfSquare(double s){
areaOfShape = s * s;
System.out.println("\n\t\t\t Area of Square :" +areaOfShape );
checkCotinue();
}
/**
* areaOfTriangle(double base, double height) method to calculate area of Triangle
*/
public void areaOfTriangle(double base, double height){
areaOfShape = 0.5 * base * height;
System.out.println("\n\t\t\t Area of Triangle :" +areaOfShape );
checkCotinue();
}
/**
* areaOfParallelogram(double pbase, double pheight) method to calculate area of Parallelogram
*/
public void areaOfParallelogram(double pbase, double pheight){
areaOfShape = pbase * pheight;
System.out.println("\n\t\t\t Area of Parallelogram :" +areaOfShape );
checkCotinue();
}
/**
* areaOfTrapezoid(double ta, double tb, double th) method to calculate area of Trapezoid
*/
public void areaOfTrapezoid(double ta, double tb, double th){
areaOfShape = ((ta+tb)/2)*th;
System.out.println("\n\t\t\t Area of Trapezoid :" +areaOfShape );
checkCotinue();
}
/**
* areaOfElipse(double ea, double eb) method to calculate are of Elipse
*/
public void areaOfElipse(double ea, double eb){
areaOfShape = Math.PI * ea * eb;
System.out.println("\n\t\t\t Area of Elipse :" +areaOfShape );
checkCotinue();
}
/**
* surfaceAreaOfcube(double ce) method to calculate surface area of Cube
*/
public void surfaceAreaOfcube(double ce){
areaOfShape = (Math.pow(ce,2)) * 6;
System.out.println("\n\t\t\t Area of Elipse :" +areaOfShape );
checkCotinue();
}
/**
* surfaceareaOfCone(double cr,double ch) method to calculate surface area fo Cone
*/
public void surfaceareaOfCone(double cr,double ch){
areaOfShape = (Math.PI*cr)*((cr + Math.sqrt(ch*ch+ cr*cr)));
System.out.println("\n\t\t\t Area of Elipse :" +areaOfShape );
checkCotinue();
}
public void checkCotinue(){
System.out.println("\n\t\t\t Press 1 To Continue \n\t\t\t Press 0 to exit ");
System.out.print("\n\t\t\t Please Enter Your Choice: ");
try{
int subOption = sc.nextInt();
if(subOption == 1)
menu();
else
System.out.println("\n\t\t\t.....Thank You....");
System.exit(0);
}
catch(InputMismatchException e){
System.out.println("\t\t\t Please Enter Numbers Only..");
checkCotinue();
}
}
public static void main(String args[]){
Area ob = new Area();
System.out.println("\t\t\t ====================================");
System.out.println("\t\t\t\t Area Calculator ");
System.out.println("\t\t\t ====================================");
ob.menu();
}
}
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