Есть класс содержащий массив и методы работы с ним, как задать его размер с клавиатуры? Java

public class DynamicArray {
public static String[] array = new String[3];
public int size = 0;

public String get(int i) {
    return array[i];
}
public void add(String s) {
    if(array.length <= size) {
        String[] temp = array;
        array = new String[size+1];
        for(int i = 0; i < temp.length; i++) {
            array[i] = temp[i];
        }
    }
    array[size] = s;
    size++;
}
public void remove(int i) {
    for (int k = i; k < size - 1; k++)
        array[k] = array[k + 1];
    size--;
}
public int size() {
    return size;
}
public void state() {
    for (int i = 0; i < array.length; i++) {
        System.out.print(array[i] + " ");
    }
}
public static void main(String[] args) {
    DynamicArray array = new DynamicArray();
    boolean exit = true;
    Scanner sc = new Scanner(System.in);
    do {
        System.out.println("Choose an option:");
        System.out.println("1. Add element");
        System.out.println("2. Remove element");
        System.out.println("3. Show array size");
        System.out.println("4. Show array");
        System.out.println("5. Show element in array");
        int option = sc.nextInt();
        switch(option) {
            case 1:
                System.out.println("Enter element to add");
                array.add(sc.next());
                System.out.println("Now array looks like: ");
                array.state();
                break;
            case 2:
                System.out.println("Choose element index to remove");
                array.remove(sc.nextInt());
                System.out.println("Now array look like: ");
                array.state();
                break;
            case 3:
                System.out.println("Array size is" + array.size());
                break;
            case 4:
                System.out.println("Now array looks like: ");
                array.state();
                break;
            case 6:
                System.out.println("Enter the index of array");
                array.get(sc.nextInt());
                break;
            default:
                System.out.println("Unknown operation");
                break;
        }
        System.out.println("Enter 1 to continue, 0 to exit the application");
        option = sc.nextInt();
        if (option == 0) exit = false;
    } while(exit);
}

}