class Bag<T> {
 
  private T[] cards;
 
  public Bag() {
    this.cards = (T[]) new Object[10];
  }
 
  public void set(int index, T value) {
    this.cards[index] = value;
  }
 
  @Override
  public String toString() {
    return "Bag{cards=" + java.util.Arrays.toString(cards) + "}";
  }
 
  public static void main(String[] args) {
    Bag<Integer> bag = new Bag<Integer>();
    bag.set(0, 10);
    bag.set(1, 20);
    bag.set(2, 30);
    System.out.println(bag);
  }
}

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