Static constructors are also called class constructors.
Read moreHow do I return an employee object in Java?
Hard code the name of the file in the method. This file contains the employee’s number, name, department, position, salary and rank. Create a Scanner object and use the Scanner class’s methods to read the data in the file and use this data to create the Employee object . Finally return the employee object.
Read moreHow do I add values to an array of objects in Java?
Create an ArrayList with the original array, using asList() method.
Read moreWhat do you mean by polymorphism in Java?
Polymorphism means “many forms “, and it occurs when we have many classes that are related to each other by inheritance. Like we specified in the previous chapter; Inheritance lets us inherit attributes and methods from another class. Polymorphism uses those methods to perform different tasks.
Read moreHow do you create an employee array in Java?
You can declare and instantiate the array of objects as shown below: Employee[] empObjects = new Employee[2]; Note that once an array of objects is instantiated like above, the individual elements of the array of objects need to be created using new.3 Mar 2022
Read moreWhat is case study on payroll system using polymorphism?
Now we use an abstract method and polymorphism to perform payroll calculations based on the type of employee . We create an enhanced employee hierarchy to solve the following problem: A company pays its employees on a weekly basis.
Read moreWhich Java class programming technique shows the use of polymorphism?
Since both the definition are different in those classes, calc_grade() will work in different way for same input from different objects. Hence it shows polymorphism.
Read more