Compiling VARPG to Java - errors about SDS and INFDS statements

The following code is a snippet from the Browsed Compile Listing of VARPG. 
I am attmpting to recompile an existing, fully debugged application from VARPG 
to JAVA. I know the compiler doesn't support the OVERLAY keyword in 
the "D" specifications but can anyone assist with solving these compiler 
diagnostics about INFDS and Ssystem DS? This compiles and runs fine with 
regular VARPG
but compile failes in Java. Thanks. RF

----------------------------------------------------------------------
Rick Flagler
Manager, Information Systems
Timken Super Precision (MPB)
Keene, NH 03431-0547
p: (603) 352-0310 x207
f: (603) 355-4534

-------------------begin compile excerpt --------------------------------------
    48 D                SDS                                                     
                                              
    49 D  PGMNAM           *PROC                                                
                                            
    50 D  MSGID                 40     46                                       
                                            
======> aaaaaaaaaaaaaaa                                                         
                                                    
*RNV3938 30 a              The subfield definition is not valid; subfield is 
ignored.                                               
    51 D  PGMLIB                81     90                                       
                                            
======>                    aaaaaaaaaaaaaa                                       
                                                    
*RNV3939 30 a              The subfield start position is not valid; subfield 
is                                                    
                           ignored.                                             
                                                    
    52 D  WRKSTN               244    253                                       
                                            
    53 D  USRPRF               254    263                                       
                                           
    54 D  JOBNBR               264    269                                       
                                            
======> aaaaaaaaaaaaaaa                                                         
                                                    
*RNV3938 30 a              The subfield definition is not valid; subfield is 
ignored.                                               
    55 DFILEFBK          DS                                                     
                                            
    56 D FILE              *FILE                                                
  * File name                              
    57 D OPEN_IND                9      9N                                      
  * File open?                              
    58 D EOF_IND                10     10N                                      
  * File at eof?                            
    59 D STATUS            *STATUS                                              
  * Status code                             
    60 D OPCODE            *OPCODE                                              
  * Last opcode                             
    61 D ROUTINE           *ROUTINE                                             
  * RPG Routine                            
 5769CL3 V3R2M2 IBM VISUALAGE RPG                         QCS3                  
            12/09/1999 08:58:38        
                                                                                
                                                   
Line   <---------------------- Source Specifications 
----------------------------><---- Comments ----> Do  Page  Change Src Seq     
Number 
....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8....+....9....+...10
 Num Line  Date   Id  Number  
    62 D LIST_NUM               30     37                                       
  * Listing line                             
    63 D SPCL_STAT              38     42S 0                                    
  * SPECIAL status                            
======> aaaaaaaaaaaaaaa                                                         
                                                    
*RNV3938 30 a              The subfield definition is not valid; subfield is 
ignored.                                               
    64 D RECORD            *RECORD                                              
  * Record name                              
    65 D MSGIDFB                46     52                                       
  * Error MSGID  

------------------------- end compile excerpt 
-----------------------------------------------       
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