How to Insert an element at a specific position in an Array in Java

// Java Program to Insert an element
// at a specific position in an Array

import java.io.*;
import java.lang.*;
import java.util.*;

class GFG {

    // Function to insert x in arr at position pos
    public static int[] insertX(int n, int arr[],
                                int x, int pos)
    {
        int i;

        // create a new array of size n+1
        int newarr[] = new int[n + 1];

        // insert the elements from
        // the old array into the new array
        // insert all elements till pos
        // then insert x at pos
        // then insert rest of the elements
        for (i = 0; i < n + 1; i++) {
            if (i < pos - 1)
                newarr[i] = arr[i];
            else if (i == pos - 1)
                newarr[i] = x;
            else
                newarr[i] = arr[i - 1];
        }
        return newarr;
    }

    // Driver code
    public static void main(String[] args)
    {

        int n = 10;
        int i;

        // initial array of size 10
        int arr[]
            = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        // print the original array
        System.out.println("Initial Array:\n"
                           + Arrays.toString(arr));

        // element to be inserted
        int x = 50;

        // position at which element
        // is to be inserted
        int pos = 5;

        // call the method to insert x
        // in arr at position pos
        arr = insertX(n, arr, x, pos);

        // print the updated array
        System.out.println("\nArray with " + x
                           + " inserted at position "
                           + pos + ":\n"
                           + Arrays.toString(arr));
    }
}

// Java Program to Insert an element
// at a specific position in an Array
// using ArrayList
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class AddElementAtPositionInArray {

    // Method to add element at position
    private static void
    addElement(Integer[] arr, int element, int position)
    {
        // Printing the original array
        System.out.println("Initial Array:\n"
                           + Arrays.toString(arr));

        // Converting array to ArrayList
        List<Integer> list
            = new ArrayList<>(Arrays.asList(arr));

        // Adding the element at position
        list.add(position - 1, element);

        // Converting the list back to array
        arr = list.toArray(arr);

        // Printing the updated array
        System.out.println("\nArray with " + element
                           + " inserted at position "
                           + position + ":\n"
                           + Arrays.toString(arr));
    }

    // Drivers Method
    public static void main(String[] args)
    {
        // Sample array
        Integer[] arr = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        // Element to be inserted
        int element = 50;

        // Position to insert
        int position = 5;

        // Calling the function to insert
        addElement(arr, element, position);
    }
}