A Java security-based PIN lock system that validates user input against a predefined PIN.

• Console-based Java application
• Clean and beginner-friendly logic
• Demonstrates core Java fundamentals
• Structured using packages

• Java
• OOP Concepts
• Console Input/Output

Make sure you are in the project root directory.

javac PinLockSystem\ContactManager.v1_oop.Main.java

java PinLockSystem.ContactManager.v1_oop.Main

Dhruv

javac PinLockSystem\ContactManager.v1_oop.Main.java
java PinLockSystem.ContactManager.v1_oop.Main