Write a Java class that a) Implement the classes outlined in the UML diagram above, ensuring the classes are serializable. Note: Employees are paid a rate of 15 per hour. The Employee class contains the following abstract method: abstract double earnings(); [15 Marks] b) Write a driver class that creates a LinkedList of employees. Populate the list with two instances of the subclass, then calculate and display the earnings. Finally, serialize the list.

> Employee name: String pay: double Employee Employee(String) getName(): String setName(String):void toString(): String Java Class>> HourlyEmployee hours Worked: double Hourly Employee Hourly Employee(String) getHours Worked():double setHours Worked(double):void earnings():double a) Implement the classes outlined in the UML diagram above, ensuring the classes are serializable. Note: Employees are paid a rate of 15 per hour. The Employee class contains the following abstract method: abstract double earnings(); [15 Marks) b) Write a driver class that creates a LinkedList of employees. Populate the list with two instances of the subclass, then calculate and display the earnings. Finally, serialize the list