Encapsulation And Data Hiding Test: Constructor Create A Cla

Question

Encapsulation And Data Hiding Test Constructorcreate A Class Name It Create a class named Employee with the following data members: Private String employeeName Private double Salary Private String CurrentDate Private String employeeNumber formatted as XXX-L: where each X is a digit (0-9) and L is a letter (A-M) Add the following constructor to your class Employee. Add a method to verify if employeeNumber has the right format based on specifications (digits 0-9 and letter A-M). Implement setter and getter methods for employeeNumber, utilizing the validation method. Also, add setter and getter methods for Salary. Test the program with the provided demo test.

Dr. Jack HW Helper · Accepted Answer

In object-oriented programming, encapsulation and data hiding are fundamental principles that enhance the security and integrity of data within classes. Encapsulation involves bundling data (attributes) and methods that operate on the data into a single unit, typically a class, while restricting direct access to some of the class's components. Data hiding furthers this by making sensitive data private, accessible only through controlled methods such as getters and setters. This approach prevents unintended modifications and promotes modular, maintainable code. Designing the Employee Class The Employee class serves as a blueprint for creating employee objects, encapsulating essential details such as employee name, salary, current date, and employee number. The private access modifier is used for data members to enforce data hiding, ensuring that these variables cannot be directly accessed or modified from outside the class. Instead, controlled access is provided through getter and setter methods, which include validation logic where appropriate. Implementation of Data Members and Constructor The constructor initializes an Employee object with default or user-provided values. It requires a parameterized constructor to set the initial state of the object. For example, the constructor can accept employeeName, salary, currentDate, and employeeNumber as parameters. To adhere to proper encapsulation, setters and getters are used to modify and access data members post-initialization. Validating Employee Number Format The employeeNumber has a specific format: XXX-L, where X is a digit (0-9), and L is a letter (A-M). The validation method, isValidEmpNum, checks these criteria using string operations and regular expressions or manual pattern matching. This method returns a boolean indicating whether the employeeNumber conforms to the specified format. The setter method setEmployeeNumber applies this validation before assigning the value, ensuring data integrity. If the employe

Encapsulation And Data Hiding Test: Constructor Create A Cla

Encapsulation And Data Hiding Test Constructorcreate A Class Name It

Paper For Above instruction

Designing the Employee Class

Implementation of Data Members and Constructor

Validating Employee Number Format

Salary Getter and Setter

Testing the Employee Class

Conclusion

References