How to Extend an Array After Initialisation in Java?

// Java program to demonstrate
// extending an array
import java.lang.*;

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

        String[] str = new String[] { "G", "E", "E" };

        // allocating space for 5 strings
        // in the extended array
        String[] ext = new String[5];
        ext[3] = "K";
        ext[4] = "S";

        // copying the array elements
        // to new extended array
        System.arraycopy(str, 0, ext, 0, str.length);

        for (String s : ext) {
            System.out.print(s);
        }
    }
}

// Java program to demonstrate
// extending an array

import java.lang.*;

class ExtendingArray {
  
    public static void extendedArray()
    {

        int[] arr = new int[] { 1, 2, 3, 4, 5, 6 };

        // allocating space for 10 integers
        int[] arr2 = new int[10];

        arr2[6] = 7;
        arr2[7] = 8;
        arr2[8] = 9;
        arr2[9] = 10;

        // copying old array to new array
        System.arraycopy(arr, 0, arr2, 0, arr.length);

        for (int str : arr2)
            System.out.print(str + " ");
    }

  	public static void main(String[] args)
    {

        ExtendingArray arr = new ExtendingArray();
      	arr.extendedArray();
    }
}