E get(int index)

Where, E is the type of element maintained
by this List container.

// Java code to demonstrate the working of
// get() method in List
  
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // creating an Empty Integer List
        List<Integer> arr = new ArrayList<Integer>(4);
  
        // using add() to initialize values
        // [10, 20, 30, 40]
        arr.add(10);
        arr.add(20);
        arr.add(30);
        arr.add(40);
  
        System.out.println("List: " + arr);
  
        // element at index 2
        int element = arr.get(2);
  
        System.out.println("The element at index 2 is " + element);
    }
}

List: [10, 20, 30, 40]
The element at index 2 is 30

// Java code to demonstrate the error of
// get() method in List
  
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // creating an Empty Integer List
        List<Integer> arr = new ArrayList<Integer>(4);
  
        // using add() to initialize values
        // [10, 20, 30, 40]
        arr.add(10);
        arr.add(20);
        arr.add(30);
        arr.add(40);
  
        try {
            // Trying to access element at index 8
            // which will throw an Exception
            int element = arr.get(8);
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

java.lang.IndexOutOfBoundsException: Index: 8, Size: 4