How we can capture sender address in UMS adapter

Question

hi,
we use  Custom Callout in UMS adapter to capture sender address
we  create one temp text file to keep sender address and but i  get "java.lang.NullPointerException"
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import oracle.sdp.messaging.Message;
import oracle.tip.pc.services.translation.util.ICustomCallout;
public class UMSCustomFilter implements ICustomCallout{
    @Override
  public boolean execute(Message message) throws Exception {
      BufferedWriter output=null;
      File file ;
    try {
                  file = new File("C:\\TEMP\\mail1.txt");
                  output = new BufferedWriter(new FileWriter(file));
                  String emailFromAddress  =message.getSenders()[0].getValue();
                  output.write(emailFromAddress);
                  output.close();
            } catch ( Exception e ) {
               e.printStackTrace();
                   output.write(e.toString());
               } finally{
                 if  (output!=null)
                   output.close();
      return true;
Thanks
Sameer

Answer 1

    Controls                                                         *
CONTROLS: z_cond_type TYPE TABLEVIEW USING SCREEN 9001.
    Types                                                            *
TYPES: BEGIN OF ty_cond_type.
INCLUDE          TYPE zvsd_ct.
TYPES: z_sel TYPE char01,
       END OF ty_cond_type.
    Internal tables                                                  *
DATA : it_cond_type TYPE STANDARD TABLE OF ty_cond_type,
    Workareas                                                        *
DATA : wa_cond_type TYPE ty_cond_type.
CONSTANTS : kc_sel      TYPE char03    VALUE 'SEL'.
MODULE user_command_9001 INPUT.
  CASE sy-ucomm.
    WHEN kc_sel.
      PERFORM f_sel_desel USING kc_sel_flag.
    WHEN kc_desel.
      PERFORM f_sel_desel USING space.
  ENDCASE.   "CASE sy-ucomm.
ENDMODULE.                 " USER_COMMAND_9001  INPUT
PROCESS AFTER INPUT.
  LOOP AT it_cond_type.
    MODULE selected_row.
  ENDLOOP.
MODULE selected_row INPUT.
  MODIFY it_cond_type
         FROM wa_cond_type
         INDEX z_cond_type-current_line
         TRANSPORTING z_sel.
ENDMODULE.                 " selected_row  INPUT
FORM f_sel_desel
     USING    p_sel_desel TYPE c.
Set the value
  wa_cond_type-z_sel = p_sel_desel.
Update the Itab.
  MODIFY it_cond_type
         FROM wa_cond_type
         TRANSPORTING z_sel
         WHERE mandt EQ sy-mandt. "Where cond is only to specify all
ENDFORM.                    " f_sel_desel
This is code from the Live Task try to understand what i am doing.