Thread: Beginnner Java, Assignment Help (Ending a code)

So I am currently writing my first assignment and have run into problems with my coding. The task was to have someone enter a 5 digit number and in return, I list each number on their respective lines. We also must create an error if a number other than 5 digits was entered. My problem is that when they enter a 1 or 2,3,4,6,7,8 digit number.. the error message occurs along with the rest of the messages (listing the numbers, etc). I want the program to end (or even re-ask to enter the numbers) if they incorrectly enter the data. Can anyone provide guidance here?


assign1.jpg

Here it is in text:


public static void main(String[] args) {

int number;

Scanner input = new Scanner (System.in);
System.out.print("Please enter a 5 digit number: ");

number = input.nextInt();
int myInteger = number;
String myString = "";
myString = Integer.toString(myInteger);


{
if (number < 10000)
System.out.print("\t ***You have not entered enough digits. Please try again.");
if (number > 99999)
System.out.print("\t ***You have entered too many digits. Please try again.");
System.exit(0);
}

if(number >= 10000)
if(number <= 99999)

System.out.print("\n");
System.out.print("\n");
System.out.println("The individual digits of this number are: ");

System.out.println((number/10000) % 10);
System.out.println((number/1000) % 10);
System.out.println((number/100) % 10);
System.out.println((number/10) % 10);
System.out.println(number % 10);

I see where you are converting your integer to a string but not doing anything with it.
One route you could go with strings:

PsuedoCode

//syso() = system.out.println()
 
if myString.length is not 5 then {
  syso("RTFM");
  startOver();
} else {
  for each char in myString {
    syso(char)
  }
jobsDone();
}

Sorry, I forgot this code at the end.


System.out.print("\n");
System.out.println("Your number listed as a String: " + myString);

The teacher wanted us to to display the numbers individually, as well as a string

Untitled.jpg

I have attached what happens when I run. The picture on the top is what its supposed to look like, when they enter the right amount of digits.
The picture inside the bold box is what happens when they enter an incorrect number. Everything is right, except I can't figure out how to remove the text that says "your individual digits.. etc".

If someone were to enter 3 digits, I want them to say they have an error and that is all.

Please enter a 5 digit number: 45632
Thank you.

The individual digits of this number are:
1st Digit: 4
2nd Digit: 5
3rd Digit: 6
4th Digit: 3
5th Digit: 2

Your number listed as a String: 45632
_____________________________________

Please enter a 5 digit number: 456
***You have not entered enough digits. Please try again.Thank you.

The individual digits of this number are:
1st Digit: 0
2nd Digit: 0
3rd Digit: 4
4th Digit: 5
5th Digit: 6

Your number listed as a string: 456

I believe I had. The first part is correct (When a user enters 5 digits).

Now when the user enters an incorrect number (anything other than 5 digits). I want an error message to occur, and solely the error message. It continues to express the individual digits despite the error. I almost want the program to stop when there is an incorrect input.

I tried system.exit(0), after the if statement's that determine the number is less or more than 5 digits. But that will end the program even if the user enters 5 digits. So the problem I am having is that I cannot stop the 'list of digits' from appearing if the user incorrectly enters data.

This is my first time programming. And my first program. My logic will probably be off.. but I can't understand your post Hamenopi. Sorry