How to find the length of an array list?

To find the length (number of elements) of an ArrayList in Java, you can use the size() method of the ArrayList class.

Here is an example of how you can use the size() method to find the length of an ArrayList:

List<String> list = new ArrayList<>();

int length = list.size();  // length is 3

In this example, an ArrayList of strings is created and three elements are added to the list. The size() method is then used to get the length of the list, which is 3.

Keep in mind that the size() method returns an int value, so the length of the list is limited to the maximum value of an int (2147483647). If you need to support lists with a larger number of elements, you may want to use a different data structure such as a LinkedList.

I hope this helps! Let me know if you have any other questions.