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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Chapter 3 Solutions
Java Programming, Loose-leaf Version
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