Perform in Core Java - this includes understanding object-oriented programming (OOP) concepts such as classes, inheritance, polymorphism, encapsulation, and interfaces, as well as familiarity with Java syntax, data types, exception handling, collections, and secure coding. SUMMER INTERNSHIP OVERVIEW: The Hanover's Internship Program provides college students with the opportunity to work on a variety of critical business assignments, test your skills, use your academic knowledge, and match your interests to a real job.