Java/VolumeCalculator.java at main · GEHU-ORG/Java · GitHub

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importjava.util.Scanner;

// Interface for Volume calculation
interfaceVolume {
// Abstract method to calculate volume
doublevolume();

// Method to display volume
defaultvoiddisplayVolume() {
System.out.printf("Volume: %.2f cubic units\n", volume());
 }
}

// Cone class implementing Volume
classConeimplementsVolume {
privatedoubleradius;
privatedoubleheight;

// Constructor
publicCone(doubleradius, doubleheight) {
this.radius = radius;
this.height = height;
 }

@Override
publicdoublevolume() {
// Volume of cone = (1/3) * π * r² * h
return (1.0/3.0) * Math.PI * radius * radius * height;
 }
}

// Hemisphere class implementing Volume
classHemisphereimplementsVolume {
privatedoubleradius;

// Constructor
publicHemisphere(doubleradius) {
this.radius = radius;
 }

@Override
publicdoublevolume() {
// Volume of hemisphere = (2/3) * π * r³
return (2.0/3.0) * Math.PI * Math.pow(radius, 3);
 }
}

// Cylinder class implementing Volume
classCylinderimplementsVolume {
privatedoubleradius;
privatedoubleheight;

// Constructor
publicCylinder(doubleradius, doubleheight) {
this.radius = radius;
this.height = height;
 }

@Override
publicdoublevolume() {
// Volume of cylinder = π * r² * h
returnMath.PI * radius * radius * height;
 }
}

publicclassVolumeCalculator {
publicstaticvoidmain(String[] args) {
Scannerscanner = newScanner(System.in);

System.out.println("Volume Calculator");
System.out.println("----------------");

// Menu for selecting shape
intchoice;
do {
System.out.println("\nSelect a shape to calculate volume:");
System.out.println("1. Cone");
System.out.println("2. Hemisphere");
System.out.println("3. Cylinder");
System.out.println("4. Exit");

System.out.print("Enter your choice (1-4): ");
choice = scanner.nextInt();

switch (choice) {
case1:
System.out.println("\nCone Volume Calculation");
System.out.println("----------------------");

System.out.print("Enter radius: ");
doubleconeRadius = scanner.nextDouble();

System.out.print("Enter height: ");
doubleconeHeight = scanner.nextDouble();

Conecone = newCone(coneRadius, coneHeight);
cone.displayVolume();
break;

case2:
System.out.println("\nHemisphere Volume Calculation");
System.out.println("---------------------------");

System.out.print("Enter radius: ");
doublehemisphereRadius = scanner.nextDouble();

Hemispherehemisphere = newHemisphere(hemisphereRadius);
hemisphere.displayVolume();
break;

case3:
System.out.println("\nCylinder Volume Calculation");
System.out.println("-------------------------");

System.out.print("Enter radius: ");
doublecylinderRadius = scanner.nextDouble();

System.out.print("Enter height: ");
doublecylinderHeight = scanner.nextDouble();

Cylindercylinder = newCylinder(cylinderRadius, cylinderHeight);
cylinder.displayVolume();
break;

case4:
System.out.println("Exiting...");
break;

default:
System.out.println("Invalid choice. Please try again.");
 }
 } while (choice != 4);

scanner.close();
 }
}