[How to compare two items ?]

Hello, I want to check if:

slot.getStack().getItem()   is equal to green wool.

How to do this ?

[Checking Current screen]

Hello, how to check if current screen is an container, loop through slots, and if item in slot is pumpkin move this pumpkin to player ?

Now i am stuck on ClientTickEvent

Forge v : 1.14.4

[Wool color]

Thanks !
 

[Wool color]

Hello i want this code to the left equals to the green wool, but i dont know how what method to use to summon it, i just can't find it

cont.getSlot(i).getStack().getItem()== BlockColored.

[Checking if there is opened inventory]

1.8.9

 

[Checking if there is opened inventory]

 

Hello, i am learning to making mods in forge, and i gave myself a challenge to make mod checking if there is opened inventory and if Yes, its stealing pumpkin but i dont know how to check if inventory is opened, loop through slots and move item from other inventory to Player inv. Pls help here's my code :

https://pastebin.com/9uPs7BTr

 

[Checking if there is opened inventory]

I Will try to make it like you said later 

[Checking if there is opened inventory]

Hello, i am learning to making mods in forge, and i gave myself a challenge to make mod checking if there is opened inventory and if Yes, its stealing pumpkin but i dont know how to check if inventory is opened, loop through slots and move item from other inventory to Player inv. Pls help