Java Program to find Volume and Surface Area of a Cylinder

Write Java Program to find Volume and Surface Area of a Cylinder with example. Before we step into the Java Program to find Volume and Surface Area of a Cylinder, Let see the definitions and formulas behind the Surface Area of a Cylinder, Top Or Bottom Surface Area, Lateral Surface Area and Volume of a Cylinder.

Java Surface Area of a Cylinder

If we know the radius and height of the cylinder, then we can calculate the surface area of a cylinder using the formula:

Surface Area of a Cylinder = 2πr² + 2πrh (Where r is a radius and h is the height of the cylinder).

The Java Volume of a Cylinder

The amount of space inside the Cylinder is called Volume. If we know the height of a cylinder then we can calculate the volume of a cylinder using the formula:

• Volume of a Cylinder = πr²h
• The Lateral Surface Area of a Cylinder = 2πrh
• We can calculate the Top Or Bottom Surface Area of a Cylinder = πr²

Java Program to find Volume and Surface Area of a Cylinder

This Java program allows the user to enter the value of a radius and height. Next, the Java program will calculate the volume of a Cylinder, Lateral Surface Area of a Cylinder, Surface Area of a Cylinder, and Top Or Bottom Surface Area of a Cylinder as per the formula.

```// Java Program to find Volume and Surface Area of a Cylinder

package SurfaceAreaPrograms;

import java.util.Scanner;

public class VolumeOfCylinder {
private static Scanner sc;

public static void main(String[] args) {
// L = Lateral Surface Area of a Cylinder, T = Top Surface Area
double radius, sa, Volume, height, L, T;
sc = new Scanner(System.in);

System.out.println("\n Please Enter the Height of a Cylinder : ");
height = sc.nextDouble();

L = 2 * Math.PI * radius * height;

System.out.format("\n The Surface area of a Cylinder = %.2f", sa);
System.out.format("\n The Volume of a Cylinder = %.2f", Volume);
System.out.format("\n The Lateral Surface area of a Cylinder = %.2f", L);
System.out.format("\n The Top OR Bottom Surface Area of a cylinder = %.2f", T);
}
}```

The following statements will allow the user to enter the radius and height of a cylinder. Then we are assigning the user entered values to already declared variables called radius and height.

```System.out.println("\n Please Enter the radius of a Cylinder : ");
System.out.println("\n Please Enter the Height of a Cylinder : ");
height = sc.nextDouble();```

Next, we are using the Mathematical Formula to calculate the surface area of a Cylinder

`sa = 2 * Math.PI * radius * (radius + height);`

In the next Java line, We are calculating the volume of a Cylinder

`Volume = Math.PI * radius * radius * height;`

In the next line, We are calculating the Lateral Surface Area of a Cylinder and Top Or Bottom Surface Area of a Cylinder

```L = 2 * Math.PI * radius * height;

The following System.out.format statements will help us to print the Volume of a Cylinder, Lateral Surface Area of a Cylinder, Surface Area of a Cylinder, and Top Or Bottom Surface Area of a Cylinder.

```System.out.format("\n The Surface area of a Cylinder = %.2f", sa);
System.out.format("\n The Volume of a Cylinder = %.2f", Volume);
System.out.format("\n The Lateral Surface area of a Cylinder = %.2f", L);
System.out.format("\n The Top OR Bottom Surface Area of a cylinder = %.2f", T);```

From the above screenshot, you can observe that we have entered the Radius of a Cylinder = 4 and height = 6

The Surface Area of a Cylinder is

Surface Area of a Cylinder= 2πr² + 2πrh

It can also be written as

Surface Area of a Cylinder = 2πr (r+h)
Surface Area of a Cylinder = 2 * Math.PI * radius * (radius + height)
Surface Area of a Cylinder = 2 * 3.14 * 4 * (4 + 6)
Surface Area of a Cylinder = 251.2

The Volume of a Cylinder is

Volume of a Cylinder = πr²h
Volume of a Cylinder = Math.PI * radius * radius * height
Volume of a Cylinder = 3.14 * 4 * 4 * 6
Volume of a Cylinder = 301.44

The Lateral Surface Area of a Cylinder is

LSA = 2πrh
LSA = 2 * Math.PI * radius * height
LSA = 2 * 3.14 * 4 * 6
LSA = 150.72

The Top Or Bottom Surface Area of a Cylinder is

T = πr²
T = 3.14 * 4 * 4
T = 50.24

NOTE: For the calculation purpose, we have taken π = 3.14 instead of (3.142857142..). So, All the above values are almost equal to program output but may differ at 0.01.

Java Program to find Volume and Surface Area of a Cylinder using Functions

This Java program allows the user to enter the value of a radius and height. Next, this Java program will calculate the volume of a Cylinder, Lateral Surface Area of a Cylinder, Surface Area of a Cylinder, and Top Or Bottom Surface Area of a Cylinder as per the formula. In this example, we use the logic that we specified in the first example but place it in a method.

```package SurfaceAreaPrograms;

import java.util.Scanner;

public class VolumeOfCylinderUsingMethods {
private static Scanner sc;

public static void main(String[] args) {
sc = new Scanner(System.in);

System.out.println("\n Please Enter the Height of a Cylinder : ");
height = sc.nextDouble();

}
public static void VolumeOfCylinder (double radius, double height) {
// L = Lateral Surface Area of a Cylinder, T = Top Surface Area
double sa, Volume, L, T;
L = 2 * Math.PI * radius * height;

System.out.format("\n The Surface area of a Cylinder = %.2f", sa);
System.out.format("\n The Volume of a Cylinder = %.2f", Volume);
System.out.format("\n The Lateral Surface area of a Cylinder = %.2f", L);
System.out.format("\n The Top OR Bottom Surface Area of a cylinder = %.2f", T);
}
}```
`````` Please Enter the radius of a Cylinder :
3

Please Enter the Height of a Cylinder :
5

The Surface area of a Cylinder = 150.80
The Volume of a Cylinder = 141.37
The Lateral Surface area of a Cylinder = 94.25
The Top OR Bottom Surface Area of a cylinder = 28.27``````

Java Program to find Volume and Surface Area of a Cylinder using Oops

In this Java program, we are dividing the Volume and Surface Area of a Cylinder code using the Object-Oriented Programming. To do this, we will create a class that holds methods.

```package SurfaceAreaPrograms;

public class VolumeOfACylinder {
double sa, Volume, L, T;

public double VolumeOfCylinder (double radius, double height) {
return Volume;
}

public double SurfaceAreaOfCylinder (double radius, double height) {
return sa;
}

public double LateralSurfaceAreaOfCylinder (double radius, double height) {
L =  2 * Math.PI * radius * height;
return L;
}

public double TotalSurfaceAreaOfCylinder (double radius) {
return T;
}
}```

Within the Main Java Program to find Volume and Surface Area of a Cylinder program, we will create an instance of the above-specified class and call the methods.

```package SurfaceAreaPrograms;

import java.util.Scanner;

public class VolumeOfCylinderUsingClass {
private static Scanner sc;

public static void main(String[] args) {
double radius, height, sa, Volume, L, T;
sc = new Scanner(System.in);

System.out.println("\n Please Enter the Height of a Cylinder : ");
height = sc.nextDouble();
VolumeOfACylinder vac = new VolumeOfACylinder();

System.out.format("\n The Surface area of a Cylinder = %.2f", sa);
System.out.format("\n The Volume of a Cylinder = %.2f", Volume);
System.out.format("\n The Lateral Surface area of a Cylinder = %.2f", L);
System.out.format("\n The Top OR Bottom Surface Area of a cylinder = %.2f", T);
}
}```
`````` Please Enter the radius of a Cylinder :
5

Please Enter the Height of a Cylinder :
9

The Surface area of a Cylinder = 439.82
The Volume of a Cylinder = 706.86
The Lateral Surface area of a Cylinder = 282.74
The Top OR Bottom Surface Area of a cylinder = 78.54``````

AreaOfACylinder Class Analysis:

1. First, we declared a function VolumeofCylinder with two argument. Within the Java Program to find Volume and Surface Area of a Cylinder function, we are calculating the Volume of a Cylinder and returning the value.
2. Next, we declared a function SurfaceAreaofCylinder with two arguments. Within the function, we are calculating the Surface Area of a Cylinder and returning the value.
3. Next, we declared a function LateralSurfaceAreaofCylinder with two arguments. Within the function, we are calculating the Lateral Surface Area of a Cylinder and returning the value.
4. Here, we declared a function TotalSurfaceAreaofCylinder with one argument. Within the function, we are calculating the Total Surface Area of a Cylinder and returning the value.

Main Class Analysis:

In this Java Program to find Volume and Surface Area of a Cylinder, we created an instance / created an Object of the AreaOfACylinder Class

`VolumeOfACylinder vac = new VolumeOfACylinder();`

Next, we are calling the VolumeofCylinder method. It is the first method that we created with the double data type, and this method will calculate the Volume of a Cylinder and return a value. So, we are assigning the return value to the volume variable.

`Volume = vac.VolumeOfCylinder(radius, height);`

Next, we are calling the SurfaceAreaofCylinder method. It is the second method that we created with a double data type, and this method will calculate the Surface Area of a Cylinder and return a value. So, we are assigning the return value to the sa variable.

`sa = vac.SurfaceAreaOfCylinder(radius, height);`

Next, we are calling the LateralSurfaceAreaofCylinder method. It is the third method that we created with a double data type. This method will calculate the Lateral Surface Area of a Cylinder and return a value. So, we are assigning the return value to the L variable.

`L = vac.LateralSurfaceAreaOfCylinder(radius, height);`

Next, we are calling the TotalSurfaceAreaofCylinder method. It is the fourth method that we created with a double data type. This method will calculate the Total Surface Area of a Cylinder and return a value. So, we are assigning the return value to the T variable.

`T = vac.TotalSurfaceAreaOfCylinder(radius);`

Lastly, we used the following System.out.format statement to print the Java Volume of a Cylinder, Lateral Surface Area of a Cylinder, Surface Area of a Cylinder, and Top Or Bottom Surface Area of a Cylinder.

```System.out.format("\n The Surface area of a Cylinder = %.2f", sa);
System.out.format("\n The Volume of a Cylinder = %.2f", Volume);
System.out.format("\n The Lateral Surface area of a Cylinder = %.2f", L);
System.out.format("\n The Top OR Bottom Surface Area of a cylinder = %.2f", T);```