Lec - 03 | What if we change the class name | java Problem | java Program
Lec - 03 | Title: What Happens If Class Name and File Name Don’t Match in Java? | Public Class Explained | What if we change the class name | java Problem | java Program
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In this video, we’ll answer a common question for Java beginners: What happens if the class name and file name don’t match when the class is declared as public?
Java has strict rules about public classes, and many learners face compilation errors due to mismatched file names and class names. This tutorial explains:
1. Why Java enforces the file name and class name to be the same for public classes.
2. What happens during compilation when they don’t match.
3. Practical examples demonstrating the errors and how to fix them.
4. When this rule applies and the exceptions to it.
💡 Key Points Covered in This Video:
1. Public Classes Rule: Why public classes in Java require the file name to match the class name.
2. Compilation Process: How the Java compiler (javac) identifies and handles mismatched names.
3. Real-World Examples: Practical demonstration of errors like:
Error: Class MyClass is public, should be declared in a file named MyClass.java
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Content For Preparation -
Detailed Notes of This Lecture :
link -
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Java Editors :
1. Notepad ++ link - https://notepad-plus-plus.org/
2. NetBeans link - https://netbeans.apache.org/front/mai...
3. VsCode link - https://code.visualstudio.com/download
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Build Connection -
Telegram link - https://t.me/TechStoneCommunity
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Stay tuned for the next video, where we’ll explore setting up environment variables and writing slightly more advanced Java programs!
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