Counting Loop I Think: HELP!

Question

Experience .... Java Beginner: I want to write a few lines where I can count down using a loop. Example: The System.out.println would be like "I have 100 dimes". Using the console (I believe) I would have a User type in a number between 1 and 100. We'll say the User types in 20 and presses Enter. The printout that the User would see would be this:
I have 100 dimes
I have 99 dimes
I have 98 dimes
I have 97 dimes .... and so on down to "I have 80 dimes".
I'm really lost as to even know where to start. Can anyone help? THANKS.

Answer 1

You can do it in both ways.
1) Getting the input passed as arguments.
e.g. java DimeTest 20
public class DimeTest {
    public static void main(String args[]) {
     int num = 0;
     try {
          if(args[0] == null) throw new Exception();
          num = Integer.parseInt(args[0]);
     } catch (Exception e) {
          System.out.println("Usage: java DimeTest [number]");
          System.out.println("e.g. java DimeTest 20");
          System.exit(0);
     int j = 100 - num;
     for(int i = 100; i >= j; i --) {
          System.out.println("I have " + i + " dimes");
}2) Get the input from the console.
import java.io.*;
public class DimeTest2 {
    public static void main(String args[]) throws IOException {
     BufferedReader reader = new BufferedReader(
                         new InputStreamReader(System.in)
     System.out.print("Enter a number:");
     String input = reader.readLine();
     int num = 0;
     try {
          num = Integer.parseInt(input);
     } catch(NumberFormatException e) {
          System.out.println("Please enter a number!");
          System.exit(0);
     int j = 100 - num;
     for(int i = 100; i >= j; i --) {
          System.out.println("I have " + i + " dimes");
}Good Luck!