Java Card

Hello,

I am new in javacard and I want please to know how can I write on eeprom's javacard and how can i read from it.
For example, I want to write a PIN code in my javacard's eeprom to personnalize it and then I need to read it( my PIN code) to verify that the user has taped the correct code. The verification is not a problem I think i can do it but my problem is that I didn't know the methodes that allows me to write and read from eeprom. Someone has an example to that? thank you all.

so my questions are:
1- how to write on eeprom? ( an example if possible)
2- when writing, can i specify where i want to store my data ( the PIN code, the nom, the prenom,..) in eeprom?
3-how to get the data that I wrote.

thank you