solved like this

import java.text.DecimalFormat;
import java.text.NumberFormat;

public class numberfor{

public static void main (String[] args){
int v = 123;
//System.out.printf("%05d", v);
NumberFormat formatter = new DecimalFormat("00000");
String s = formatter.format(v);
System.out.println(s);

}

}

The following should show some of the possibilities:

import java.io.*;

public class Fmt {
    public static void main(String[] args) throws IOException {
        int v = 123;
        System.out.printf("%05d\n", v);
        System.out.printf("%05dxyz%s\n", v, ".");
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        pw.printf("%05dxyz%s", v,".");
        pw.close();
        String s = sw.toString();
        System.out.println(s);
        PrintWriter pwf = new PrintWriter(new FileWriter("C:\\z.txt"));
        pwf.printf("%05dxyz%s", v,".");
        pwf.close();
        String sf = String.format("%05dxyz%s", v,".");
        System.out.println(sf);
    }
}

Arne

DecimalFormat dfm = new DecimalFormat("00000");
   String s1 = dfm.format(number);
   String s2 = "abcd" ;
   String s3 = s1 + s2 ;
--
http://javalessons.com  Paul Hamaker, SEMM
Teaching ICT since 1987