Display numbers with leading zeros (0) in Java? [duplicate]

Answer 1

you can add a left pad with zeros after having the result.

String.format("%05d", result);

for zero-padding with length=5.

EDIT: i to removed the previous EDIT, it was totally wrong :@

Answer 2

This will help you

String.format (http://java.sun.com/j2se/1.5.0/docs/api/java/util/Formatter.html#syntax)

In your case it will be: String.format("%03d", num) - 0 - to pad with zeros, 3 - to set width to 3

Answer 3

Don't confuse numbers with String representation of numbers. Your question revolves around the latter -- how to represent a number as a String with leading zeros, and there are several possible solutions including using a DecimalFormat object or String.format(...).

i.e.,

  int myInt = 5;
  String myStringRepOfInt = String.format("%05d", myInt);
  System.out.println("Using String.format: " + myStringRepOfInt);

  DecimalFormat decimalFormat = new DecimalFormat("00000");
  System.out.println("Using DecimalFormat: " + decimalFormat.format(myInt));