1. Create a properly encapsulated class named Person that has the following: A String instance variable called name. ● ● A correctly overrided equals method which returns true if the name instance variable of the parameter and the reference variable calling the method are equal. (Do not forget the null and class type checks!) Compile your Person class. 2. Create a properly encapsulated class named Employee that inherits from Person and has the following: ● ● ● ● A constructor that takes three Strings as parameters for name, office, and hourlyWage and sets the instance variables of both the parent class and the Employee class. An overridden toString method that returns the concatenation of name and hourlyWage instance variables (separated by a space). A method named paycheck that takes an integer parameter (# of hours) and returns a double. The method should calculate and return the total wage (# of hours * hourlyWage). You can assume that the hourlyWage instance variable will always have a format of a dollar sign followed by at least one digit. Compile your Employee class. 3. Create a class named EmployeeTest that has a main method. The class should do the following: Create an Employee object and pass in "Fred" for name, "RR 205" for office, and "$38.50" for hourlyWage. You may use a reference variable name of your choice. Call the toString method and print the result. ● ● ● ● ● A constructor that takes a String parameter and sets the instance variable. A properly named getter for the instance variable. ● ● A String instance variable called office (e.g. "LWH 2222"). A String instance variable called hourlywage (e.g. "$45.15"). Call the paycheck method, pass in a value of 20 for the parameter; print the result. Create a Person object and pass in "Fred" for name. You may use a reference variable name of your choice. Call the equals method on the "Fred" Employee object and pass in the reference to the "Fred" Person object. Print out the result. Compile and run your Employee Test class. Your output should match the sample output below: Fred $38.50 770.0 false

Explain Abstract Model and System-Level Computing Model?

Design a class called Date that has integer data members to store month , day, and year. The class should have two constructors; a default constructor that accepts no parameters, and a three-parameter constructor that allows the date to be set by the programmer. If the user creates a Date object without passing any arguments, or if any of the values passed are invalid, the default values of 1, 1, 2001 (i.e., January 1, 2001) should be used. The class should have three (3) member functions to print the date in the following formats: 3/15/16 March 15, 2016 15 March 2016 Demonstrate the class by writing a program that uses it. Be sure your program only accepts reasonable values for month and day. The month should be between 1 and 12. The day should be between 1 and the number of days in the selected month. I expect to see all uses of the constructors that you made, including the error checking. I also expect to see all uses of the 3 output functions in your program. You are responsible…

Create a class called Complex for performing arithmetic with complex numbers. Complex numbers have the form realPart + imaginaryPart * i where i is -1 Write a program to test your class. Use floating-point variables to represent the private data of the class. Provide a constructor that enables an object of this class to be initialized when it is declared. Provide a no-argument constructor with default values in case no initializers are provided. Provide public methods that perform the following operations: a)  Add two Complex numbers: The real parts are added together and the imaginary parts are added together. b)  Subtract two Complex numbers: The real part of the right operand is subtracted from the real part of the left operand, and the imaginary part of the right operand is sub- tracted from the imaginary part of the left operand. c)  Print Complex numbers in the form (a, b), where a is the real part and b is the imaginary part.