In which situation Marker Interface will usefull?

Question

Can any one tell the In which situation Marker Interface will usefull?

Answer 1

1.Marker Interface does not have any methods inside interface.If our class implements any marker interface internally jvm will add some capabilites to our class.

2.Some of the marker interfaces are

Serializable,Cloneable,RandomAccess etc

3.Marker interfaces are introduced to reduce the burden on the developers.Internally jvm takes care of logic when we implement markerinterface to add the capability or functionalty to our class

4.We can write our own marker interface only possible with customization of jvm

Uses

1.Marker interfaces are useful to declare the metadata about the class

2.Marker interfaces are useful in the case other code takes decisions depending on whether an object implements some marker interface.