Code for the Meeting Scheduler

We've reviewed the different aspects of the meeting scheduler and observed the attributes attached to the problem using various UML diagrams. Let's explore the more practical side of things, where we will work on implementing the meeting scheduler using multiple languages. This is usually the last step in an object-oriented design interview process.

We have chosen the following languages to write the skeleton code of the different classes present in the meeting scheduler:

• Java

• C#

• Python

• C++

• JavaScript

Meeting scheduler classes#

In this section, we will provide the skeleton code of the classes designed in the class diagram lesson.

Note: For simplicity, we are not defining getter and setter functions. The reader can assume that all class attributes are private and accessed through their respective public getter methods and modified only through their public method functions.

User#

The User class refers to a participant taking part in a meeting. A user can either accept or reject an invitation. The definition of this class is given below:

Interval#

The Interval class denotes the meeting interval (the start and end time).

Meeting room#

The MeetingRoom class will represent the meeting rooms, each having a specific capacity, a boolean to check if a room is available, and a list of intervals for which the room is booked. The definition of the class is provided below:

Calendar#

The Calendar class contains a list of meetings to keep track of all the scheduled meetings. The definition of this class is provided below:

Meeting#

The Meeting class outlines the meeting details such as the number and list of participants, meeting time interval, and meeting room. It also has the option to add more participants. The definition of this class is shown below:

Meeting scheduler#

The MeetingScheduler class is the main class of the meeting scheduler and contains the organizer, which is responsible for scheduling and canceling a meeting as well as booking or releasing a room. It also checks if any meeting rooms are available for a meeting. In addition, there will be only one instance of the scheduler in the meeting scheduler. Therefore, the MeetingScheduler class will be a Singleton class to ensure that only one instance for the scheduler is created in the entire system.

The definition of this class is shown below:

Notification#

The Notification class is responsible for sending notifications to users about any new meetings or cancelations. The definition of this class is provided below:

Wrapping up#

We've explored the complete design of the meeting scheduler in this chapter. We've looked at how the meeting scheduler can be visualized using various UML diagrams and designed using object-oriented principles and design patterns.