UDF for leading zero's in message mapping

Question

Dear team,
I need UDF for leading zero's in my message mapping.
Source and Target both structures contains matnr field.But we have to maintain total 18 chars at target matnr , because RFC in R/3 needed.So I want to add leading zero's when mapping. Can anybody provide the UDF code.
Matnr[source]--->split by value(eachvalue) ->UDF->Matnr[Target]
Ex::if source matnr conatains value "9846538" ; I need matnr value at target side like "000000000009846538"[total 18 chars].
-Drumi

Answer 1

Hi Ambrish,
Good day...
I have enterd what you said and I got below error... and I gave "input" in place of var1, 18 in place of filedlenght in below program...
=================================
int len = Integer.parseInt(18);
int inputLength = input.length();
try {
Integer.parseInt(input);
// If it is an integer, add 0 (len - inputLength) times
for (int i=0; i< len-inputLength;i++)
    input = "0" + input;
return input;
} catch (NumberFormatException numForEx) {
// return as it is, if alphanumeric
return input;
====================================
ERROR:
Source text of object Message Mapping: Lubrisur_SHPMNT_SHPMNT05_TO_WMMBXY_WMMBID02_TransferPosting | urn:bp:xi:dwn:lu:common:Logistics:100 has syntax errors:
Function LeadingZeros, Line 1:
cannot find symbol symbol  : method parseInt(int) location: class java.lang.Integer int len = Integer.parseInt(18);                  ^ 1 error
=======================
Please suggest