Leave Management System 🗒️💻

This repository contains a Java-based Leave Management System developed as part of Object-oriented Programming course. The system provides a graphical user interface for employees to apply for leave and for administrators to manage leave records.

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Overview

The Leave Application System is a desktop application built using Java Swing. It supports two user roles:

• Employee – apply for leave and manage personal leave records
• Admin – manage leave records of all employees

The system uses file handling for data storage and focuses on object-oriented design principles.

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Features

Employee

• Register and login
• Apply for leave
• View personal leave records
• Edit or delete pending leave applications

Admin

• Login authentication
• View leave records of all employees
• Edit leave details and update leave status
• Delete leave records
• Add leave records for registered employees

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System Characteristics

• Role-based access (Employee / Admin)
• Auto-generated User ID and Leave ID
• Input validation and error handling
• Simple and intuitive Java Swing GUI
• File-based data storage (text files)

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Technologies Used

• Java
• Java Swing (GUI)
• Object-Oriented Programming concepts
• File handling for data persistence

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Project Scope

• Employee leave application management
• Admin leave approval and record management
• CRUD operations on leave records
• Academic system modelling (use case, class, and state diagrams)

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How to Run the Application

Prerequisites

• Java Development Kit (JDK) installed
• Windows operating system
• Command Prompt access

Steps to Run

1. Open Command Prompt.

2. Navigate to the project directory:

   cd [path_to_project_folder]
   

3. Run the application:

   javac Login.java
   java Login
   

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Login Information

Employee Login

• Employees must register an account first before logging in.
• Registered user credentials are stored in the registerInfo.txt file.

Admin Login

Use the following default admin credentials:

• User ID: @dmin666
• Password: @dminPa$$word

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Once logged in, the system will automatically load the appropriate interface based on the user role (Employee or Admin).

Thank you for using the BreakBuddy Leave Application System.

Notes

This project is developed for educational purposes to demonstrate object-oriented design, Java Swing GUI development, and basic file handling. It is not intended for production use.