2.1 (Converting Celsius to Fahrenheit) Write
a program that reads a Celsius degree in double from the console, then converts
it to Fahrenheit and displays the result. The formula for the conversion is as
follows:
fahrenheit = (9 / 5) * celsius + 32
Hint: In
Java, 9 / 5 is 1, but 9.0 / 5 is 1.8.
Code : File
Name- CelsiusToFahrenheit.java
import java.util.*;
public class CelsiusToFahrenheit {
public static void
main (String arg[]){
Scanner input =new
Scanner(System.in);
System.out.print("Enter degre in
Celsius : ");
double celsius =
input.nextDouble();
double fahrenheit
= (9.0/5.0)*celsius+32;
System.out.print("Celsius" + celsius + "is" +
fahrenheit + "in Fahrenheit");
}
}
2.2 (Computing the volume of a cylinder) Write
a program that reads in the radius and length of a cylinder and computes volume
using the following formulas:
area = radius * radius * π
volume = area * length
Code : File Name- VolumeOfCylinder.java
import java.util.*;
public class VolumeOfCylinder {
public static void main (String arg[]){
Scanner input =new Scanner (System.in);
System.out.print("Enter Radius of
cylinder: = ");
double radius =input.nextDouble();
System.out.print("Enter length of
cilynder: = ");
double length =input.nextDouble();
double area = radius*radius*3.14159;
double volume = area*length;
System.out.println("The area of
cylinder is : = " + area);
System.out.println("The volume of
cylinder is : = " + volume);
}
}
2.3 (Converting feet into meters) Write
a program that reads a number in feet, converts it
to meters, and displays the result. One foot is 0.305 meter.
Code
: File Name- FeetToMeters.java
import java.util.*;
public class FeetToMeters {
public
static void main (String arg[]){
Scanner
input =new Scanner(System.in);
System.out.print("Enter the value is feet : = ");
double
feet = input.nextDouble();
double
meter = (feet*0.305);
System.out.print("Meter is = " +meter);
}
}
2.4 (Converting pounds into kilograms) Write a
program that converts pounds into kilograms. The program prompts the user to
enter a number in pounds, converts it to kilograms, and displays the result.
One pound is 0.454 kilograms.
Code : File Name- PoundsToKilograms.java
import java.util.*;
import javax.swing.*;
public class PoundsToKilograms
{
public static void main (String arg[]){
Scanner input =new Scanner (System.in);
System.out.print("Enter value of
pounds: = " );
double pounds = input.nextDouble();
double kilograms =pounds*0.454;
System.out.print("Kilogram =
" +kilograms);
}
}
2.5* (Financial application: calculating tips) Write
a program that reads the subtotal and the gratuity rate, then computes the
gratuity and total. For example, if the user enters 10 for
subtotal and 15% for gratuity rate, the program displays $1.5 as gratuity
and $11.5 as total.
Code : File
Name- CalculatingTips.java
import java.util.*;
public class CalculatingTips {
public static void
main (String arg[]){
Scanner input =
new Scanner(System.in);
System.out.print("Enter subtotal: =");
double subtotals =
input.nextDouble();
System.out.print("Enter gratuity: = ");
double gratuitys =
input.nextDouble();
double gratuity =
(gratuitys/subtotals);
double total =
(subtotals+gratuity);
System.out.print("Gratuity
is: = $"+ gratuity + "and Total: = $"+total);
}
}
