a.
Explanation of Solution
Program:
File name: “CountByFives.java”
//Define a class named CountByFives
public class CountByFives
{
//Define main method
public static void main(String[] args)
{
//For loop that counts by five from 5 through 500
for(int i = 5 ; i <= 500 ; i+=5)
{
//Print the result
System...
b.
Explanation of Solution
Program:
File name: “CountByAnything.java”
//Import necessary header files
import java.util.Scanner ;
//Define a class CountByAnything
public class CountByAnything
{
//Define main method
public static void main(String[] args)
{
//Create scanner class
Scanner sc = new Scanner(System.in);
//Prompt the user to enter an integer
System.out.print("Enter an integer:");
//Get the integer from the user
int n = sc.nextInt();
//Declare a variable and initialize the value
int count = 0 ;
/*For loop that counts by the entered number from 5 through 500*/
>&#...
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