// generics/GenericHolder.java

// (c)2021 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// 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<Automobile>();

h3.set(new Automobile()); // type checked

Automobile a = h3.get(); // No cast needed

//- h3.set("Not an Automobile"); // Error

//- h3.set(1); // Error

}

}