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Program that returns number of elements in the Arraylist

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This Program is used to returns number of elements in the ArrayList.

Example Program


import java.util.ArrayList;

class Arraysize {
	public static void main(String[] args) {

		// create an empty array deque with an initial capacity
		ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

		// use add() method to add elements in the deque
		arrlist.add(25);
		arrlist.add(10);
		arrlist.add(20);
		arrlist.add(35);

		// printing all the elements available in list
		for (Integer number : arrlist) {
			System.out.println("Number = " + number);
		}

		int retval = arrlist.size();
		System.out.println("Size of list = " + retval);
	}
}


output:

Number = 25

Number = 10

Number = 20

Number = 35

Size of list = 4

Explnation:

public int size()

Returns the number of elements in this list.

Specified by:

size in interface Collection<E>

Specified by:

size in interface List<E>

Specified by:

size in class AbstractCollection<E>

Returns:

the number of elements in this list

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Filed in: Java Examples

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