Read IDOC using java language

Hi,
   I am a new to sap java develop.
now i am doing some research about IDOC/ALE using java language. I receive an IDOC file from the sap system ,now i want to read the data in the IDOC file and tranform it to an XML file. Is there anyway to do it? whether java have provided some Kits to finish it.
   thanks in advance.
    qiuguo

Hi
Please refer to
1. idoc
3. how to create a simple idoc in practice? can you provide an example?
Regards
Abhijith YS

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