Reading RPG style record in Java

Hi, as implied by the title I have to read (and use) this file (and cannot
modify it) in a Java program:

A R AF2WK TEXT('Afpds: workfile')
A*
A AWIDDOC 5 0 TEXT('Id doc')
A AWIDPAG 10 0 TEXT('Id page')
A AWIDOPE 14 0 TEXT('Id')
A AWNMOPE 20 TEXT('Operation')
A AWDSOPE 40 TEXT('Ds name')

A AWFLD 256 VARLEN(30) CCSID(1144)
A AWFLDEX 32000 VARLEN(1) ALWNULL DFT('')
A CCSID(1144)
A*
A K AWIDDOC
A K AWIDPAG
A K AWIDOPE

I use in RPG programs AWFLD and AWFLDEX as DS:

dDs_w_StampaTesto...

d ds qualified

d h like(Ubase)
Pos. Hor.
d v like(Ubase)
Pos. Ver.
d punti 4s 1
Punti, serve?
d font 8
Font
d codepage 8
Code page
d Orientamento 3s 0
0/90/180/270
d Lunghezza 3s 0
Len testo stampa
d Colore 3s 0
Colore testo

so the code is very easy:

Select;
When AWDSOPE = 'Ds_w_StampaTesto';
Ds_w_StampaTesto = AWFLD;
...
Endsl;

So my question is: how to do the same in Java with hardcoding positions,
names and types?

TIA

--
Marco Facchinetti

Mr S.r.l.

Tel. 035 962885
Cel. 393 9620498

Skype: facchinettimarco