Mindtap Computing, 1 Term (6 Months) Printed Access Card For Farrell’s Java Programming, 8th
Mindtap Computing, 1 Term (6 Months) Printed Access Card For Farrell’s Java Programming, 8th
8th Edition
ISBN: 9781337091480
Author: Joyce Farrell
Publisher: Cengage Learning
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Chapter 3, Problem 4PE

Explanation of Solution

a.

Program code:

NumbersDemo.java

//define the method NumbersDemo

public class NumbersDemo

{

    //define the main() method

    public static void main(String args[])

    {

        //create two integer variable

        int n1 = 10;

        int n2 = 7;

//call the static methods

displayTwiceTheNumber(n1);

displayNumberPlusFive(n1);

displayNumberSquared(n1);

        //print new line

        System.out.println();

//call the static methods

displayTwiceTheNumber(n2);

displayNumberPlusFive(n2);

displayNumberSquared(n2);

    }

//define the method displayTwiceTheNumber()

public static void displayTwiceTheNumber(int n)

{

    //multiply n by 2 and print it

    System.out.println(2 * n);

}

//define the method displayNumberPlusFive()

public static void displayNumberPlusFive(int n)

{

    //add 5 to n and dispaly it

    System...

Explanation of Solution

b.

Program code:

NumbersDemo2.java

//import the package

import java.util.Scanner;

//define the method NumbersDemo

public class NumbersDemo2

{

    //define the main() method

    public static void main(String args[])

    {

        //create the object of scanner

        Scanner in = new Scanner(System.in);

        //prompt the user to enter two numbers

        System.out.println("Enter the numbers");

        //scan for the values

        int n1 = in.nextInt();

        int n2 = in.nextInt();

        //print new line

        System.out.println();

//call the static methods

displayTwiceTheNumber(n1);

displayNumberPlusFive(n1);

displayNumberSquared(n1);

        //print new line

        System.out.println();

//call the static methods

displayTwiceTheNumber(n2);

displayNumberPlusFive(n2);

displayNumberSquared(n2);

    }

//define the method displayTwiceTheNumber()

public static void displayTwiceTheNumber(int n)

{

    //multiply n by 2 and print it

    System...

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