String.format prints 'question mark' as output

Question

I am fairly new to programming and was following a tutorial on youtube and I got stuck at this code:

public static void main(String[] args) {
   System.out.println(String.format("%02d", 1));
}

The code is supposed to print 01 as output but instead I get ??, just 2 question marks. Can someone explain what I am doing wrong ?

It doesn't. I've tried both in eclipse and cmd. Plus I've tried another things as well, it always prints just "????" — Ryū Jin, May 05 '15 at 09:55
try `System.out.format(Locale.US, "%02d", 1);`. Also set your project encoding as UTF-8. — Alex Salauyou, May 05 '15 at 09:58
The numbers were being displayed in hindi format. And the output just displayed them as question marks. Don't even know why eclipse is changing these numbers to hindi numbers — Ryū Jin, May 05 '15 at 10:09

score 1 · Accepted Answer · answered May 05 '15 at 10:05

1

Nevermind, I figured it out. Eclipse was using hindi format numbers to display output (don't know why ?). Setting project encoding to UTF-8 allowed me to see them instead of 'question marks'.

answered May 05 '15 at 10:05

Ryū Jin

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String.format prints 'question mark' as output

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