Additional Facts about Interfaces

Classic programmed-learning exercises, refreshed for modern Java and presented in the current MrStyner.com portfolio style.

Modern Java noteThis archive has been refreshed for Java 25 LTS. Core language concepts remain useful, while outdated setup instructions and browser-era Java are labeled or replaced. Java 26 is the current feature release; Java 25 is used here as the stable teaching baseline.

Answer:

Yes.

Additional Facts about Interfaces

There are features of interfaces that the example did not show: A class can implement several interfaces:

class SomeClass extends SomeParent implements InterfaceA, InterfaceB, InterfaceC
{

}

Now SomeClass must implement all the methods listed in all the interfaces.

QUESTION 22:

Could the interfaces contain several definitions of the same constant?