Hi Friend,

Try the following code:

import java.util.*;
class CombineTwoArrays{
           public static int[] merge(int[]... arr) {
                int arrSize = 0;
                for (int[] array : arr) {
                        arrSize += array.length;
                }
                int[] result = new int[arrSize];
                int j = 0;
                for (int[] array : arr) {
                        for (int s : array) {
                                result[j++] = s;
                        }
                }
                return result;
        }

        public static void main(String[] args) {
                int[] P = new int[6];
                System.out.println("Enter elements of P: ");
                Scanner input = new Scanner(System.in);
                for (int i = 0; i < P.length; i++) {
                        P[i] = input.nextInt();
                }
                int[] Q = new int[4];
                System.out.println("Enter  elements of Q: ");
                for (int i = 0; i < Q.length; i++) {
                        Q[i] = input.nextInt();
                }
                int R[] = (int[]) merge(P, Q);
                System.out.println("Merged Array is: ");
                for (int i = 0; i < R.length; i++) {
                        System.out.println(R[i]);
                }

        }
}

Thanks