Coverage Summary for Class: Generics (dev.suresh.generics)

 package dev.suresh.generics;
 
 import static java.lang.System.out;
 
 import java.util.List;
 
 public class Generics {
 
   void main() {
 
     var emp = new Employee("Employee-1");
     out.println(emp);
 
     var mgr = new Manager("Manager-1");
     out.println(mgr);
 
     var dir = new Director("Director-1");
     out.println(dir);
 
     var empList = List.of(emp);
     var mgrList = List.of(mgr);
     var dirList = List.of(dir);
 
     printDetails(empList);
     printDetails(mgrList);
     printDetails(dirList);
 
     //    LongAdder
     //    test(dirList);
     //    test(mgrList);
 
     // Generics reification trick
     m(List.of());
     m(List.of(1));
     m(List.of("1"));
     m(List.<Boolean>of());
     m(List.of(List.of("")));
   }
 
   private static void printDetails(Object o) {
     out.println(o.hashCode());
     out.println(System.identityHashCode(o));
     out.println(o.getClass());
     out.println("-----------");
   }
 
   private static void test(List<Employee> list) {
     list.add(new Director("hhh"));
   }
 
   /** Generics reification trick. This won't work for multi-level generics though */
   @SafeVarargs
   public static <T> void m(Iterable<T> itr, T... reify) {
     out.println(reify.getClass().componentType());
   }
 }