# POUtil.java Sample

This topic inludes the source code for the POUtil.java Sample.

## Sample Location

This sample is located in the following directory in your WebLogic Workshop installation:

BEA_HOME/weblogic81/samples/workshop/SamplesApp/JavaControlProject/verifyFunds/poUtil/

## Sample Source Code

`01 package verifyFunds.poUtil; 02 03 import com.bea.control.Control; 04 05 public interface POUtil extends Control 06 { 07 /** 08 * Formats a purchase order number, removing non-numeric characters. 09 */ 10 int formatNumber(java.lang.String stringNumber); 11 }`