Write a program that adds the numbers 1 through 5 into the numbers ArrayList and then prints out the first element in the list.

Answer code is given below along with comments to explain each step

Explanation:

Method 1:

/ / size of the array numbers to store 1 to 5 integers

int Size = 5;

/ / here we have initialized our array numbers, the type of array is integers and size is 5, right now it is empty.

ArrayList numbers = new ArrayList (Size);

/ / lets store values into the array numbers one by one

numbers. add (1)

numbers. add (2)

numbers. add (3)

numbers. add (4)

numbers. add (5)

/ / here we are finding the first element in the array numbers by get () function, the first element is at the 0th position

int firstElement = numbers. get (0);

/ / to print the first element in the array numbers

System. out. println (firstElement);

Method 2:

int Size = 5;

ArrayList numbers = new ArrayList (Size);

/ / here we are using a for loop instead of adding manually one by one to store the values from 1 to 5

for (int i = 0; i < Size; i++)

{

/ / adding the values 1 to 5 into array numbers

numbers. add (i);

}

//here we are finding the first element in the array numbers

int firstElement = numbers. get (0);

/ / to print the first element in the array

System. out. println (firstElement);