Design and implement a set of classes that define the employees of a hospital. Start by creating a Hospital Employee super class, from which three other classes will inherit. The HospitalEmployee class will have the following components: • name - a private String instance variable containing the employee's name (taken in the object constructor) • field - a private String instance variable containing the employee's field (e.g. cardiology, oncology) (taken in the object constructor) • onCall - a private boolean instance variable, set to true if the employee is on call, and false otherwise. (initialized as false in the constructor) ● greeting - a function that takes no parameters, returns nothing, and prints a string to standard output with the following format: "Hello, my name is [name]. I work in [field]. How can I help you?" • changeShift - a function that takes no parameters, returns nothing, and changes the value of onCall. If onCall is false, changeShift should change it to true. Otherwise, onCall should be changed to false. • isOnCall - a function that takes no parameters and returns the value of the boolean onCall. There will be two classes inheriting from the Hospital Employee class- Doctor and Nurse. These classes will have the following components. Doctor: • A constructor that takes two String parameters, the Doctor's name and the Doctor's field. • checkCharts - a function that takes no parameters and returns nothing. If the Doctor is on call, it should print out, "Charts have been checked." Otherwise, the function should print, "Sorry, it's not my shift." Nurse: • A constructor that takes one String parameter, the Nurse's name. It should set the variable field to "nursing." • takeVitals - a function that takes no parameters and returns nothing. If the Nurse is on call, it should print out, "Vitals have been taken." Otherwise, the function should print, "Sorry, it's not my shift." Create a driver class, named Hospital, that tests out these functions. Create a Doctor object with the name "Jennifer Jackson" and the field "pediatrics", as well as a Nurse with the name "Bobbie Blake". First, call Bobbie's changeShift function. Then, On separate lines, print out Jennifer's greeting, the ouput of her checkCharts function, Bobbie's greeting, and the output of his takeVitals function.
Design and implement a set of classes that define the employees of a hospital. Start by creating a Hospital Employee super class, from which three other classes will inherit. The HospitalEmployee class will have the following components: • name - a private String instance variable containing the employee's name (taken in the object constructor) • field - a private String instance variable containing the employee's field (e.g. cardiology, oncology) (taken in the object constructor) • onCall - a private boolean instance variable, set to true if the employee is on call, and false otherwise. (initialized as false in the constructor) ● greeting - a function that takes no parameters, returns nothing, and prints a string to standard output with the following format: "Hello, my name is [name]. I work in [field]. How can I help you?" • changeShift - a function that takes no parameters, returns nothing, and changes the value of onCall. If onCall is false, changeShift should change it to true. Otherwise, onCall should be changed to false. • isOnCall - a function that takes no parameters and returns the value of the boolean onCall. There will be two classes inheriting from the Hospital Employee class- Doctor and Nurse. These classes will have the following components. Doctor: • A constructor that takes two String parameters, the Doctor's name and the Doctor's field. • checkCharts - a function that takes no parameters and returns nothing. If the Doctor is on call, it should print out, "Charts have been checked." Otherwise, the function should print, "Sorry, it's not my shift." Nurse: • A constructor that takes one String parameter, the Nurse's name. It should set the variable field to "nursing." • takeVitals - a function that takes no parameters and returns nothing. If the Nurse is on call, it should print out, "Vitals have been taken." Otherwise, the function should print, "Sorry, it's not my shift." Create a driver class, named Hospital, that tests out these functions. Create a Doctor object with the name "Jennifer Jackson" and the field "pediatrics", as well as a Nurse with the name "Bobbie Blake". First, call Bobbie's changeShift function. Then, On separate lines, print out Jennifer's greeting, the ouput of her checkCharts function, Bobbie's greeting, and the output of his takeVitals function.
Chapter11: Advanced Inheritance Concepts
Section: Chapter Questions
Problem 2PE
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In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
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