Problem Statement: In the CreateAFile class create the createAFile( method. The method must create a file called sample_data.txt in the same section that this problem is located in. Next, In the CreateAFile class you will be creating a new method writeToAFile() where you must write code that will write the text "test" to the sample_data.txt file. Finally, In the CreateAFile class you will be creating a new method readAFile() to read some data from the sample_data.txt file. You will have to store that data in an ArrayList and then return the ArrayList.

Java please

{In Java Programming Please} Create a class hierarchy that represents different types of employees in a company. Start with a class called Employee that has two methods: calculateSalary() and displayDetails(). Then, create two subclasses of Employee: Manager and Engineer. Override the calculateSalary() method in both subclasses to calculate the salary based on their job role and experience. Override the displayDetails() method in both subclasses to print out a message indicating the details of the employee. Next, create another class called Salesperson that extends Employee and has a method called calculateCommission(). Create two subclasses of Salesperson: SeniorSalesperson and JuniorSalesperson. Override the calculateCommission() method in both subclasses to calculate the commission based on their sales performance. Override the displayDetails() method in both subclasses to print out a message indicating the details of the salesperson. In the main method, create objects of each class…

In Java,  Write a line of code that performs each of the following tasks : (a) Call superclass Employee's toString method from subclass Pieceworker's toString method. (b)Specify that class Pieceworker inherits from class Employee. (c) Call superclass Employee's constructor from subclass Pieceworker's constructor - assume that the superclass constructor receives three strings representing the first name, last name and social security number.