Class EmployeeDatabase

java.lang.Object

EmployeeDatabase

public class EmployeeDatabase
extends java.lang.Object

A class that implements a database of employees.

This class models some functions of an employee database. We have two classes: EmployeeDatabase and Employee. You only need to finish functions in this class, however you would have to refer to the functions in the other class as well. And, of course, fix the checkstyle errors.

See Also:

Lab 10 Description

Field Summary

Fields

Modifier and Type	Field	Description
java.util.List<Employee>	employees	List of employees.

Constructor Summary

Constructors

Constructor	Description
EmployeeDatabase()	Constructor which initializes the employees list.

Method Summary

Modifier and Type	Method	Description
int	countEmployeesUnder(Employee employee)	Count the number of employees under this manager.
int	countManagersAbove(Employee employee)	Count the number of managers above this employee.
Employee	findManager(Employee employee)	Returns the manager for the given employee.
static void	main(java.lang.String[] unused)	Main method for testing.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

employees

public java.util.List<Employee> employees

List of employees.

Constructor Detail

EmployeeDatabase

public EmployeeDatabase()

Constructor which initializes the employees list.

We suggest that you investigate the ArrayList class, which is one of the more useful built-in data structures in Java.

Method Detail

findManager

public Employee findManager(Employee employee)

Returns the manager for the given employee.

Parameters:

employee - the employee to return the manager for

Returns:

the employee's manager

countManagersAbove

public int countManagersAbove(Employee employee)

Count the number of managers above this employee.

Consider both a recursive and an iterative solution to this problem.

Parameters:

employee - name of the employee

Returns:

the number of manager's above this employee

countEmployeesUnder

public int countEmployeesUnder(Employee employee)

Count the number of employees under this manager.

Consider both a recursive and an iterative solution to this problem.

Parameters:

employee - name of the employee

Returns:

the number of employees under this manager

main

public static void main(java.lang.String[] unused)

Main method for testing.

You should understand, but do not need to modify, this function.

Parameters:

unused - unused input arguments