Site icon TestingDocs.com

Java program to convert liters to gallons.

admin

Problem Statement

Write a Java program to convert liters to gallons. Given that one liter is equal to 0.264 gallons.  The mathematical conversion equation to convert is as follows:

 

 

IPO(Input, Processing, Output )

IPO chart for the program is shown below:

Input for the program: amount in liters.

Processing

gallons = liters * 0.264

Round the output to 3 decimals.

Output: Print the gallons.

Tools Used

We will use the below tools to develop the program.

Eclipse IDE Setup

Some steps and instructions to create a Java application on Eclipse IDE:

https://www.testingdocs.com/create-a-new-java-project-in-eclipse/

https://www.testingdocs.com/create-java-package-in-eclipse-ide/

https://www.testingdocs.com/create-a-new-java-class-in-a-project/

https://www.testingdocs.com/run-java-project-in-eclipse/

Java program

/**
 * Java program to convert liters to gallons
 */
package questions;

import java.util.Scanner;

/**
 * @author 
 *
 */
public class LitersToGallonsJavaProgram {

  /**
   * @param args
   */
  public static void main(String[] args) {
    // variables 
    double liters;  // liters
    double gallons; // gallons 
    char choice='y';
    Scanner keyboard = new Scanner( System.in );
    while(choice=='y' || choice== 'Y') {
      System.out.print( "Enter liters to convert to gallons:= " ); 
      liters = keyboard.nextDouble( ); 
      // 1 Liter = 0.264 Gallons.
      gallons = 0.264 * liters;  
      System.out.print( liters + " Liters = " );

      System.out.println( (double)Math.round(gallons * 1000d) / 1000d +
 " gallons." );
      System.out.print( "Do you want to convert 
another amount? [y/n]:= " ); 
      choice = keyboard.next().charAt(0); 
    }
    keyboard.close();
  } // end main
} //end class

 

Screenshot

Screenshot of the program code in the IDE window.

 

Output

Save the program code and execute test cases to verify the program output.

Enter liters to convert to gallons:= 1
1.0 Liters = 0.264 gallons.
Do you want to convert another amount? [y/n]:= y
Enter liters to convert to gallons:= 3.785
3.785 Liters = 0.999 gallons.
Do you want to convert another amount? [y/n]:= n

 

The program will loop and continue to compute the conversion while the user enters either y or Y as specified in the loop condition.

 

—

Java Tutorial on this website:

https://www.testingdocs.com/java-tutorial/

For more information on Java, visit the official website :

https://www.oracle.com/in/java/

Exit mobile version