public class ArraySampleExtendingIndex {

    private static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    
    public static void main(String[] args) throws IOException {

        boolean insertNew = false,
                newEntry;
        
        int[] numbers = {10, 2},
              temp;

        int length = numbers.length;

        System.out.print("The Current Values Are: ");
        System.out.print("[");

        // display the current values
        for (int x = 0; x <= numbers.length - 1; x++) {

            System.out.print(numbers[x]);

            if (x < numbers.length - 1) {

                System.out.print(", ");
            }
        }

        System.out.print("]");
        System.out.print("\n\n");
        
        do {
            
            System.out.print("Add New Entry ? ");
            String response = br.readLine();

            if (response.equalsIgnoreCase("Y")) {
                
                System.out.print("Enter Your New Entry: ");
                int entry = Integer.parseInt(br.readLine());
                
                temp = new int[length];
                newEntry = true;
                
                // assign the values in the temporary array corresponding to its last position
                for (int x = 0 ; x <= length - 1; x++) {

                    temp[x] = numbers[x];
                }

                // make an update to the value of the length, dont just add 1
                length++;

                numbers = new int[length];

                // add the new entry in the last index
                for (int i = length - 1; i >= 0; i--) {

                    if (newEntry == true) {

                        numbers[i] = entry;
                        newEntry = false;
                    }
                    else {

                        numbers[i] = temp[i];
                    }
                }

                System.out.print("\n");
                System.out.println("New Entry Has Been Added.");
                System.out.print("\n");
                
                insertNew = true;
            }
            else {

                insertNew = false;
            }

        }
        while (insertNew);

        System.out.print("\n");

        System.out.print("Current Value Are: ");
        System.out.print("[");

        // display the array together with the added values
        for (int x = 0; x <= numbers.length - 1; x++) {

            System.out.print(numbers[x]);

            if (x < numbers.length - 1) {

                System.out.print(", ");
            }
        }

        System.out.print("]");
        System.out.print("\n");
    }
}