Generate number with fixed size in java

Question

I would like to generate a number between 0 and 9999 for an android application , that I would increment each time. The generated string must be fixed size. For example, for 0, I would like to have '0000' for 1, I would like to have '0001' etc.

Any ideas would be welcome. thanks

Use String formatted = String.format("%03d", num); – Rajesh Jadav Aug 28 '15 at 08:08 — Rajesh Jadav, Aug 28 '15 at 08:08

arun · Answer 1 · 2015-08-28T09:17:48.847

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Using StringUtils leftpad

// StringUtils.leftPad("your number", "length", 'padding character');
StringUtils.leftPad("0", 4, '0');

The lib http://www.java2s.com/Code/Jar/c/Downloadcommonlang3jar.htm or https://commons.apache.org/proper/commons-lang/download_lang.cgi

edited Aug 28 '15 at 09:17

answered Aug 28 '15 at 08:00

arun

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It would have been nice to include in the answer the fact that it requires an external library... Like in the answers in the linked question. – 2Dee Aug 28 '15 at 08:10

Generate number with fixed size in java

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