why classes in some java programs are implements an empty interface in java?
What is the usage?
interface E{
}
public class A implements E{
public static void main(String[] args) {
System.out.println("Something...");
}
}
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Chamoda De silva
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This is called Marker Interface, see the duplicated question for more info. – Pradeep Simha Nov 02 '21 at 06:37
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Does this answer your question? [What is an empty interface used for](https://stackoverflow.com/questions/380665/what-is-an-empty-interface-used-for) – Burak Ozmen Nov 02 '21 at 06:37
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1Does this answer your question? [Marker Interfaces in Java?](https://stackoverflow.com/questions/25850328/marker-interfaces-in-java) – Pradeep Simha Nov 02 '21 at 06:38
2 Answers
1
Basically it is used to logically divide the code and a good way to categorize code. It is more useful for developing API and in frameworks like Spring.
Danish Alam
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