Java/Generics/Generic Constructor

Use a generic constructor.

class GenCons {
  private double val;
  <T extends Number> GenCons(T arg) {
    val = arg.doubleValue();
  }
  void showval() {
    System.out.println("val: " + val);
  }
}
public class GenConsDemo {
  public static void main(String args[]) {
    GenCons test = new GenCons(100);
    GenCons test2 = new GenCons(123.5F);
    test.showval();
    test2.showval();
  }
}