Write a Java program that stores information about a company. You should define two classes: Employee which represents the employees in the company, and Department which represents the departments the employees are in. Class definition The classes should have the following fields: ▪ Department • String name ▪ Employee • String firstName • String lastName • double salary • Department department Notes: 1. All fields should be private. 2. You should define a constructor that takes as parameters all fields in each class. 3. You should define a getter and a setter for all fields in each class. 4. The field salary on class Employee should never be a negative number. 5. You should define a method getFullName on class Employee that returns the employees full name as a String. Main Program after you have defined the classes, In the main method define two objects of type Department as follows: # name 1 Sales 2 AccountingThen define an array of type Employee and fill it with the following Employee objects: # firstName lastName salary department 1 John White 1000 Department object 1 (Sales) 2 David Ford 1500 Department object 1 (Sales) 3 Sophie Beech 1200 Department object 1 (Sales) 4 Mary Howe 1300 Department object 2 (Accounting) 5 Susan Brand 1400 Department object 2 (Accounting) the program should show the user the following menu and wait for input from the user: 1. Show all employees 2. Show employees for department 3. Show employee with max salary Option 1: shows the employee’s full name, salary and department name for all employees Option 2: asks the user for a department name then shows the employee’s full name, salary and department name for that department. Option 3: shows the full name, salary and department name for the employee with the maximum salary in the company