Java - How do I rid of the last comma when outputting numbers from a for loop

Question

So I'm running a program when a user is inputting a number and then I am printing out the odd numbers that come before this integer.

public class odd2 {

static Scanner UI = new Scanner(System.in);

public static void main(String[] args) {
    {
        // TODO Auto-generated method stub
        System.out.print ( " Please enter a number ");

        if (UI.hasNextInt() )
        {
            int numberEntered = UI.nextInt();
        //define the limit


        System.out.println("Printing Odd numbers between 1 and " + numberEntered);

        for(int i=1; i < numberEntered; i++){

                //if the number is not divisible by 2 then it is odd
                if( i % 2 != 0){
                        System.out.print(i + ",");
                }
        }

Currently it prints out all numbers with a comma after them. Is there any way I can skip the ,. A solution I've though that might work it to create an array of these integers and then use stringToArray but I'd like to know if there is something easier I am missing.

System.out.print((i < numberEntered-1 ? i + "," : i )); – Jay Prakash Oct 18 '16 at 09:50 — Jay Prakash, Oct 18 '16 at 09:50

Liam Ferris · Accepted Answer · 2016-10-18T09:41:10.857

1

Something like this would work:

System.out.print( (i == numberEntered - 1 || i == numberEntered - 2) ? i : i + ",");

Using a turnary operator to check if 'i' is the final value, then only printing the number.

edited Oct 18 '16 at 09:41

answered Oct 18 '16 at 09:34

Liam Ferris

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1

Ternary operators are for affecting a value to a variable, this won't work. – Arnaud Oct 18 '16 at 09:37
@Berger Ternary operations are not only for assignment. http://ideone.com/DBzE4B – OneCricketeer Oct 18 '16 at 09:39
@Berger I tried it, it works. Not sure what you are talking about? – Liam Ferris Oct 18 '16 at 09:39
2

@cricket_007 : then I learned something I wasn't aware of, thanks for the link. – Arnaud Oct 18 '16 at 09:40
1

Thanks that works well! – JavaSprinter Oct 18 '16 at 09:54
1

@JavaSprinter mark solutions as solutions. – xenteros Oct 18 '16 at 10:16

Java - How do I rid of the last comma when outputting numbers from a for loop

1 Answers1