I am working on a project in Java and I am trying to create a new class that will extend from an existing final class. However, when I try to extend the class, I get an error message saying “Cannot extend from a final class.” This is causing me a problem because I need to add some additional functionality to the existing class, but I am unable to do so because it is marked as final.
Here is an example of the code I am trying to use:
final class MyFinalClass {
// existing class code
}
class MyNewClass extends MyFinalClass {
// new class code
}
The error message that I’m getting is:
MyNewClass.java:3: error: cannot inherit from final MyFinalClass
class MyNewClass extends MyFinalClass {
I’m stuck and don’t know what to do, I need to extend the functionality of the existing class but I can’t do it because it is final.