1. Java provides one interface to sort objects of user defined types. What is the name of this interface type. Use an example to describe how to implement this interface. (You answer must be within 5 lines)

In java and UML diagram, Please show output and comment code out Source file: Each public class must be contained in a separate Java source file. Only one source file will have a main() method and this source will be named BlackjackGameSimulator.java. Other source/class names are up to you following the guidelines specified so far in the course. The format of the Java source must meet the general Java coding style guidelines discussed so far during the course. Pay special attention to naming guidelines, use of appropriate variable names and types, variable scope (public, private, protected, etc.), indentation, and comments. Classes and methods should be commented with JavaDoc-style comments (see below). Please use course office hours or contact the instructor directly if there are any coding style questions. JavaDocs: Sources should be commented using JavaDoc-style comments for classes and methods. Each class should have a short comment on what it represents and use the @author…

Java provides one interface to sort objects of user defined types. What is the name of this interface type. Use an example to describe how to implement this interface.

In java Define and create an array (called emps) of object references for objects of class Employee of length 100. (b) Create three objects for classes SalariedEmp, WeeklyEmp, and HourlyEmp (where these 3 classes are subclasses of class Employee); and with references e1, e2, e3 for the 3 objects:(c) Assign e1,e2, e3 to the first three elements of array emps:(d) Print the earnings of the 100 employee in the array emps in one loop (with polymorphism) where earnings are calculated with method earnings():