writing a countdown using java

[stevie171]

hi im writing this as script and i cant think of what i have done wrong can anybody help me?? :)

import java.util.Scanner;

public class prod9
{
static Scanner sc = new Scanner (System.in);

public static void main (String[]args)
{

System.out.println(" " + " Starting Countdown To Launch ");
int countdownnumber = 10;
String input;
while (true)
{
System.out.println(" ");
if (countdownnumber ==8)



{
System.out.println(" Ignition Sequence Start");

}




break;

countdownnumber -=1;
if (countdownnumber ==0)
{
System.out.println(" We have lift off ");
System.out.println(" ");

}
}
}
}

[Zack]

Are you receiving errors? If so, what is/are the exact error message(s)? If not, what is the program doing VS what you want it to do?

(Personally, my guess is because you have a break; statement in there. Try taking that out to see if it helps you at all. But that's just a guess based on the little information you provided.)

[stevie171]

its just a spaceship count down, from 10 to lift off the error i was getting is

prod9.java:30: unreachable statement
countdown number -=1;
^
1error
i took out the break: statement it compiles but wen i run it im just getting a black screen an keeps jumping to the bottom of the page

thanks for replyin to me, im not to good at this :)

[Zack]

Ah, right.

You do have to break the function, but only when countdownnumber is equal to zero.

[maknib]

Just a Guess

import java.util.Scanner;

public class prod9
{
  static Scanner sc = new Scanner (System.in);

  public static void main (String[]args)
  {

    System.out.println(" " + " Starting Countdown To Launch ");
    int countdownnumber = 10;
    String input;
    while (true)
    {
      System.out.println(" ");
      if (countdownnumber ==8)
      {
        System.out.println(" Ignition Sequence Start");
      }
      
      [B][SIZE="3"]countdownnumber--;[/SIZE][/B]      
      if (countdownnumber ==0)
      { 
        System.out.println(" We have lift off ");
        System.out.println(" ");
        [B][SIZE="3"]break;[/SIZE][/B]     
      }
    } 
  }
}

Wouldn't you want the Sequence to Start at 10 not 8 ?

[Zack]

They don't start the ignition of a rocket shuttle as soon as the countdown begins.

[DarrylBurke]

They don't start the countdown at 10 either ;)

db

[stevie171]

on the ball lads, i kinda see wat i did wrong,

and yes its supposed to start at 10 and instead of 8 its supposed to say ignition sequence start,

i should really pay more attention in class! :) is their anyway i can get instructions on how to writes these, as i never took dwn my notes in class :)

Thanks for u replys people