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

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    Default 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


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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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);

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    Please edit your post and wrap your code with code tags:
    [code=java]
    YOUR CODE GOES HERE
    [/code]
    to get highlighting and preserve formatting.

    Did you have a question about the code? If its output is wrong, post the output and add some comments describing what the output should look like.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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();
    }

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    Please copy and paste the console output here, not as an image.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    Is that the program's output? Can you explain what is wrong with it?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    What problems are you having with that?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    Look at using an if/else statement to control what happens. The pseudo code in post#4 showed an idea.

    Please post the current version of the code. Be sure to wrap it in code tags.
    If you don't understand my answer, don't ignore it, ask a question.

  14. The Following User Says Thank You to Norm For This Useful Post:

    Hamenopi (September 16th, 2014)

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    import java.util.Scanner;
    public class Assignment1 {
     
    	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. ");
     
    	}
    	if(number < 9999);	
    	if(number > 100000);
    		System.out.print("Thank you.");
     
     
    	System.out.print("\n");
    	System.out.print("\n");
    	System.out.println("The individual digits of this number are: ");
     
    	  System.out.println("1st Digit: " + (number/10000) % 10);
          System.out.println("2nd Digit: " + (number/1000) % 10);
          System.out.println("3rd Digit: " + (number/100) %  10);
          System.out.println("4th Digit: " + (number/10) % 10);
          System.out.println("5th Digit: " + (number % 10));
     
        System.out.print("\n");
        System.out.println("Your number listed as a string: " + myString);
     
    	}
     
     
     
     
    	}
    Last edited by Norm; September 16th, 2014 at 01:13 PM. Reason: Spaces removed from code tag

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    The code recognizes the out of range numbers and prints a message.
    What action do you want the code to take after the message is printed?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    Methinks your logic is may be off.

    if(number < 9999);	//Then what?
    if(number > 100000); // Then what?
    System.out.print("Thank you.");

    low bounds : 10000
    high bounds : 99999
    && means and
    so if number is greater or equal to low bounds AND less or equal to highBounds...

    if(number >= lowBounds && number <= highBounds){
      keepGoing();
    } else {
      stop(hammerTime);
    }
    Last edited by Hamenopi; September 16th, 2014 at 02:24 PM. Reason: Forgot my }

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    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

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    Default Re: Beginnner Java, Assignment Help (Ending a code)

    Have you read the tutorial about the if statement:
    The if-then and if-then-else Statements (The Java™ Tutorials > Learning the Java Language > Language Basics)
    If you don't understand my answer, don't ignore it, ask a question.

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