Java - remove() function for ArrayList<class> (I need help)

Question

how can i remove an element that i had added before in the ArrayList<>
I create it like that, public static ArrayList<Product> P = new ArraList<Product>(); and

// the method i am using
public void removeProduct(Product p) {
P.remove(p); // this way , did not solve the problem
}

// comment
BTW, i did the (add method) and it works and everything are fine, i hope someone could help to get the answer and thanks :)

Answer 1

https://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html

In the documentation you will find different remove methods. For example Arraylist.remove(int index) --> removes the value at the index.

Answer 2

ahmadaljanabi But you need the index of the element to remove it.
You can not write remove(value) --> write: remove(index of value). And the index of a value is an integer.

For example:
YourList = [A, B, C]
yourList.remove(1) --> remove value/element at index 1
YourList = [A,C]

Answer 3

okay thanks

Answer 4

I wanna delete a String element there not by integer value, i appreciate your answer, thanks