"Why Can't the Main Class Be Protected in Java? Understanding Access Rules and Inheritance"

📰 Dev.to · Karthick Karthick

Learn why Java's main class can't be protected and how access rules impact inheritance

beginner Published 13 Jun 2026

Action Steps

Declare a public class with a main method to see the default access level
Try to declare a protected class to understand the compiler error
Apply the access rules to a simple inheritance example using public and private modifiers
Test the visibility of class members using different access modifiers
Compare the access levels of classes, methods, and variables in Java

Who Needs to Know This

Java developers and beginners in software engineering can benefit from understanding access modifiers and their implications on class design

Key Insight

💡 In Java, the main class must be public because it needs to be accessible from outside the package

Key Takeaways

Learn why Java's main class can't be protected and how access rules impact inheritance

Introduction In Java, access modifiers define the visibility and accessibility of classes, methods,...