Thread: Need help with looping

So the question asks us to use a sentinel value to end a program, but the sentinel value is 999, but the while loop only recognises strings... Im totally lost guys. Hope you can help me

 
   static Scanner console = new Scanner (System.in);
   public static void main (String[] args)
                           throws FileNotFoundException
 
    {
 
         PrintWriter outfFile = new PrintWriter ("Invoice.txt")   ;
 
         String firstItem;
         String item ;
         int price;
 
         System.out.println(" Please scan the name of the first item: ");
         firstItem = console.next();
 
         while (item != 999)
 
         {
            System.out.println("Enter the next item");
            item = console.next();
            System.out.println("Enter the price of the " + item);
            price = console.nextInt();
            outFile.Println("Item Name    Item Price");
            outFile.println( item + " " + price);
 
 
 
     }
   }

--- Update ---

If you would like me to post the complete question, I'd be happy to do so

This is the error I am getting.


----jGRASP exec: javac -g Scan1.java

Scan1.java:23: error: incomparable types: String and int
while (item != 999)
^
Scan1.java:30: error: cannot find symbol
outFile.Println("Item Name Item Price");
^
symbol: variable outFile
location: class Scan1
Scan1.java:31: error: cannot find symbol
outFile.println( item + " " + price);
^
symbol: variable outFile
location: class Scan1
3 errors

----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.

your code:
String item; // a String object
while (item != 999) // String compares to integer

You are comparing a String object to an integer. if you want that kind of comparison, you better parse the String to integer first then do the comparison

Scan1.java:30: error: cannot find symbol
outFile.Println("Item Name Item Price");
^

you don't have outFile variable, but you do have outfFile variable PrintWriter outfFile = new PrintWriter ("Invoice.txt");, please check the spelling.
but, it would still have an error since PrintWriter class doesn't have an Println method, but it has println.
Println is different from println, java is a case sensitive programming language.