OnJava8-Examples/typeinfo/BoundedClassReferences.java

// typeinfo/BoundedClassReferences.java
// (c)2020 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 BoundedClassReferences {
  public static void main(String[] args) {
    Class<? extends Number> bounded = int.class;
    bounded = double.class;
    bounded = Number.class;
    // Or anything else derived from Number.
  }
}