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);
	    }
}

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