JAVA PROGRAM • LEVEL 10 — INHERITANCE & POLYMORPHISM
Prevent Method Overriding in Java
Learn prevent method overriding in java with a complete, compiler-ready Java 17 example.
PROBLEM UNDERSTANDING
Input and expected output
No input required
Fixed
COMPLETE JAVA 17 PROGRAM
Complete Java 17 implementation
class Rule { final String policy(){return "Fixed";} } class Child extends Rule {}
class Main { public static void main(String[] args){System.out.println(new Child().policy());} }CURRENT STEP
Select Start to walk through the important lines.
SELECTED LINE
No line selected
EXPECTED OUTPUT FOR THE SAMPLE
Fixed
PROGRAM EXPLANATION
Algorithm and explanation
- Initialize the deterministic sample values used for prevent method overriding in java.
- Create the required object and apply final method and Inheritance restriction to its state or behavior.
- Print the final result and compare it with the documented sample output.
This Java 17 example demonstrates final method and Inheritance restriction through a complete, executable program. The values are intentionally small so students can trace each statement, verify the output, and then modify the example safely in the online compiler.
EFFICIENCY
Time and space complexity
O(1)
O(1)
DEBUGGING CHECKLIST
Common mistakes
Keep the class name Main and the entry method signature public static void main(String[] args) when using the online compiler.
Create an object before accessing instance members; static members can be accessed through the class name.
Java is case-sensitive, and every statement that requires a semicolon must end with one.