Exploring Advanced Language Features - Beginning Java 7 - page 263

class Employee
{
private String name;
Employee(String name)
{
this.name = name;
}
String getName()
{
return name;
}
}
class TypeSafety
{
public static void main(String[] args)
{
List<Employee> employees = new ArrayList<Employee>();
employees.add(new Employee("John Doe"));
employees.add(new Employee("Jane Smith"));
employees.add("Jack Frost");
Iterator<Employee> iter = employees.iterator();
while (iter.hasNext())
{
Employee emp = iter.next();
System.out.println(emp.getName());
}
}
}
Listing 3-51 ' s refactored main() method illustrates the central feature of generics,
whichisthe parameterized type (aclassorinterfacenamefollowedbyananglebracket-
delimited type list identifying what kinds of objects are legal in that context).
For example, List<Employee> indicates only Employee objects can be stored
in the List . As shown, the <Employee> designation can be repeated with Ar-
rayList , as in Arraylist<Employee> , which is the collection implementation
that stores the Employee s. Because the compiler can figure out this type argument