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Can a final class be subclassed in Java?
The final modifier for finalizing the implementations of classes, methods, and variables.
The main purpose of using a class being declared as final is to prevent the class from being subclassed. If a class is marked as final then no class can inherit any feature from the final class.
You cannot extend a final class. If you try it gives you a compile time error.
Example
final class Super {
private int data = 30;
}
public class Sub extends Super{
}
Output
C:\Sample>javac Sub.java
Sub.java:7: error: cannot inherit from final Super
public class Sub extends Super{
^
1 error
Updated on 30-Jul-2019 22:30:20
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