Development Java Tutorial

An integer between the % sign and the format conversion code acts as a minimum field width specifier.
The default padding is done with spaces.
If you want to pad with 0's, place a 0 before the field width specifier.
For example, %05d will pad a number of less than five digits with 0's.

import java.util.Formatter;
public class MainClass {
  public static void main(String args[]) {
    Formatter fmt = new Formatter();
    fmt.format("%05d", 88);
    System.out.println(fmt);
  }
}
00088