Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add an instance variable, named department, of type String. Supply a method toString that prints the manager's name, department, and salary. Make a class Executive inherit from Manager. Supply appropriate toString & equals methods for all classes. Supply a test program that tests these classes and methods.

see explaination

Explanation:

class Employee

{

String name;

double salary;

void tostring ()

{

System. out. println ("Employee:/nName: "+name+"/nSalary: "+salary+"/n");

}

Employee (String n, double s)

{

name=n;

salary=s;

}

}

class Manager extends Employee

{

String department;

void tostring ()

{

System. out. println ("Manager:/nName: "+name+"/nDepartment: "+department+"/nSalary: "+salary+"/n");

}

Manager (String n, double s, String d)

{

super (n, s);

department=d;

}

}

class Executive extends Manager

{

void tostring ()

{

System. out. println ("Executive:/nName: "+name+"/nDepartment: "+department+"/nSalary: "+salary+"/n");

}

Executive (String n, double s, String d)

{

super (n, s, d);

}

}

public class test

{

public static void main (String args[])

{

Employee e = new Employee ("Neo",12000);

e. tostring ();

Manager m = new Manager ("Cramster",100000,"Homework");

m. tostring ();

Executive ex = new Executive ("Chuks",1000000,"Homework");

ex. tostring ();

}

}