[Question] To java developers

Hi, i have a question about get value of pDef of armor/ pAtk for weapon from java side.

I mean

I want obtain value of pdef of some armor so i use this:

L2ItemInstance item = _activeChar.getInventory().getItemByObjectId(itemObjectId);

item.getWeaponItem().getEffects(item, _activeChar). ... i dont know what next (now i check all possible fields / methods )

but iam not sure if it is good method.

Who know correct method for obtains this values?

all values are inside xml files in nodes, but where it is store in java?

sry for eng. thx.