Average, Sum, and Product in Java Using BigDecimal

 Write a Java program to solve the average, sum and product of three numbers using double data type and big decimal.

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Program Listing

import java.util.Scanner;

import java.math.*; 

/**

 * @author Jake R. Pomperada, MAED-IT, MIT

 * www.jakerpomperada.com and www.jakerpomperada.blogspot.com

 * jakerpomperada@gmail.com

 * Bacolod City, Negros Occidental Philippines

 *

 */

public class AddTwoNumbers {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

   

   Scanner scan = new Scanner(System.in);

 

        BigDecimal avg,add,multiply; 

     

        Double avg_display,add_display,multiply_display; 

      

         

        System.out.println("\n");

        System.out.println("\tAverage, Sum, and Product in Java Using BigDecimal");

        System.out.println("\n");

        System.out.print("\tEnter the First number: ");

        double num1 = scan.nextDouble();

        System.out.print("\tEnter the Second number: ");

        double num2 = scan.nextDouble();

        System.out.print("\tEnter the Third number: ");

        double num3 = scan.nextDouble();

        scan.close();

      

        avg = new BigDecimal(average(num1, num2, num3)); 

      add =  new BigDecimal(sum(num1, num2, num3));

      multiply =  new BigDecimal(product(num1, num2, num3));

        

      avg_display = avg.doubleValue();

        add_display = add.doubleValue();

        multiply_display = multiply.doubleValue();

        

        System.out.println("\n");

        System.out.print("\tAverage of these numbers :" 

        + avg_display + "\n");

        System.out.print("\tSum of these numbers :" 

            +  add_display+"\n");

        System.out.print("\tProduct of these numbers :" 

            +  multiply_display+"\n");

        System.out.println("\n");

        System.out.println("\tEnd of Program");

        System.out.println();

}

public static double average(double a, double b, double c)

    {

        return (a + b + c) / 3;

    }

 

public static double sum(double a, double b, double c)

    {

        return (a + b + c);

    }

 

public static double product(double a, double b, double c)

    {

        return (a * b * c);

    }

}