SWIFT MT103 Message

[Everlyn Mbula]

Any one help write a java code to sort the MT103 message below in to various fields

{1:F21AZANTZTZAXXX3269088750}{4:{177:1301181400}{4 51:0}}
{1:F01AZANTZTZAXXX3269088750}
{2:O1031442130118TANZTZTXAXXX59346719251301181500N }
{3:{103:TIS}{108:0118PT0000000145}}
{4:
:20:50038699
:23B:CRED
:32A:130118TZS500000,
:50K:/9921183501
Ep.9. CPS Recurr Exp Electronc
BOT
Bank of Tanzania
DSM
:52A:/9921183501
TANZTZTX
:59:/5111073009
Simornes M. Simwela
:71A:SHA
:72:/REC/Metal Bills
-}{5:{MAC:00000000}{PAC:00000000}{CHK:37F087A6B279} }{S:{SAC:}{FAC:}{COP}}

[Norm]

sort the MT103 message below in to various fields

Can you define how to sort the message text into the fields you want? Given a definition for where each of the fields is, then a java program could be written.
Are the fields related to a line in the text?
Are the fields fixed length or delimited by some special characters?