How to do an array ]..

import java.io.*;
import java.lang.*;
import java.util.*;
  
class GFG {
  
    // Function to add x in arr
    public static int[] addX(int n, int arr[], int x)
    {
        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 n
        // then insert x at n+1
        for (i = 0; i < n; i++)
            newarr[i] = arr[i];
  
        newarr[n] = x;
  
        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 added
        int x = 50;
  
        // call the method to add x in arr
        arr = addX(n, arr, x);
  
        // print the updated array
        System.out.println("\nArray with " + x
                           + " added:\n"
                           + Arrays.toString(arr));
    }
}