How to create own Marker Interface with example

Interview Candidate
Nov 25th, 2005
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R B

Nov 28th, 2005

Marker interface example-
public interface Serializabale {}
public interface Cloneable {}
Also known as 'Tagging' interface.

nagarajcse82
Profile Answers by nagarajcse82

Nov 28th, 2005

1.>in general tagged or marker interface is used to just identify the class, in real time projects there are so many classes,in order to identify which class belongs to which module,this tag or marker interface is useful.
2.>
in serialization also,if we want to serialize the object,first it will internally checks whether the class is implementing java.io.serializable interface by using instanceof operator.
3.>in rmi also every remote class should implement java.rmi.remote interface.
public interface csedept{
}
public class computer implements csedept{
int no;
String name;
}
public class Sample
{
computer c=new computer();
if(c instanceof csedept)
{
c.name="computer science course";
}
}