Format an Integer using Java String Format

Question

I am wondering if it is possible  using the String format method in Java  to give an integer preceding zeros   For example   1 would become 001 2 would become 002     11 would become 011 12 would become 012     526 would remain as 526    etc  At the moment I have tried the following code   String imageName      3d       s    for  int i   0  i  lt  1000  i          System out println  String format  imageName  i   foo           Unfortunately  this precedes the number with 3 empty spaces  Is it possible to precede the number with zeros instead

User · Answer

If you are using a third party library called apache commons-lang, the following solution can be useful:

Use StringUtils class of apache commons-lang :

int i = 5;
StringUtils.leftPad(String.valueOf(i), 3, "0"); // --> "005"

As StringUtils.leftPad() is faster than String.format()

User · Answer

Use  03d in the format specifier for the integer  The 0 means that the number will be zero-filled if it is less than three  in this case  digits   See the Formatter docs for other modifiers

User · Answer

String format   03d   1        gt   001                            -- print the number one                      ------     as a decimal integer                    -------     minimum of 3 characters wide                  --------     pad with zeroes instead of spaces   See java util Formatter for more information

[java] Format an Integer using Java String Format

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