gathering custom inventory items... pass it to method...

What im trying to accomplish here is you click a block it will open a menu like a ChestGUI but you can place items inside and after you close it will pass all the contents to a method... any help would be grateful

:: EDIT ::
I have it to the point it opens the custom inventory i just need to figure out how to grab the contents of the inventory after the inventory is closed...

 

any help please

 

on InventoryCloseEvent check if the title of the inventory is the one that yours is and if it is then pass event.getInventory() to the method

 

djdeath1 Try using the InventoryCloseEvent, and add appropriate checks to determine if its your inventory
Edit: ninja'd by le monkey

 

Thank you all for your help!
xTigerRebornx , monkeymanboy

 

collection or array is valid argument for method