// 9B
public class AreaG<T> {
  private T t;
  public void add(T t){
    this.t = t;
  }
  public T get() {
    return t;
  }
  public static void main(String[] args){
    AreaG<Integer> rectange = new AreaG<Integer>();
    AreaG<Double> circle = new AreaG<Double>();
    rectange.add(10);
    circle.add(2.5);
    System.out.println(rectange.get());
    System.out.println(circle.get());
  }
}