What is he doing ":"?

Question

Java

Please explain or provide a link. What does ":" do in the last loop?

public class testMethods
{
    public static void main(String[] args) throws IOException {

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        ArrayList<Integer> list = new ArrayList<Integer>();
        for (int i = 0; i < 5; i++)
        {
            list.add(0, Integer.parseInt(reader.readLine()));
        }
        for (int n : list){
            System.out.println(n);
        }

    }
}

Answer 1

This is foreach as far as I understood
stackoverflow.com/questions/1818729/java-foreach-l...

Answer 2

This is a for-each loop . Designed to iterate over containers so you don't have to mess around with iterators.

Answer 3

This is a loop for arrays.
n[i] = list[i]

Answer 4

This is a loop where each element of the List array is passed to the variable n, and since the type in the array is numeric, the variable n is also made of a numeric type