Class GenericHolder

generics/GenericHolder.java:6–19

// Visit http://OnJava8.com for more book information.

public class GenericHolder<T> {
  private T a;
  public GenericHolder() {}
  public void set(T a) { this.a = a; }
  public T get() { return a; }
  public static void main(String[] args) {
    GenericHolder<Automobile> h3 =
      new GenericHolder<>();
    h3.set(new Automobile()); // type checked
    Automobile a = h3.get(); // No cast needed
    //- h3.set("Not an Automobile"); // Error
    //- h3.set(1); // Error
  }
}