Distributed Computing in Java 9

Discriminated unions

Like structures, discriminated unions help as a valid type name in further declarations. They are followed by the type name and then the switch keyword, and they can take parameters of the type int/char/Boolean or enum:

. employee_dept {admin, sales, it, business};union  employee switch (employee_dept) {  case admin, business : age_spec age;  cae sales : sales_detail sales;  default float salary;};