What is called marker interface? list out any three marker interfaces?

marker interface is a interface in java which has no fields or methods.in other words empty interface in java is known as marker interface.

there are some examples of marker interfaces are 

1 serializable 2. clonable 3. remote interface

1. java.io.Serializable (the object is serializable)

2.java.lang.Clonable (the object is cloned)

3.javax.servlet.singleThreadModel

Marker interface in java  is a kind of interface which has no method is known as marker interface. Serializable, Clonnable is the example of marker interface.

The three marker interface are,

1. MyMarkerInterface.java                (which is own created marker interface)2. ImplMarkerInterface.java              (A java class which implments my marker interface)3. FunctionalityMarkerInterface.java  (which help you to understand how the JVM do                                                                special operation for marker interface)

For coding part refer belo URL,

http://beyondcorner.com/create-own-marker-interface-in-java/

An interface without any body (empty body) is called a Marker Interface

An interface is called a marker interface when it is provided as a handle by java interpreter to mark a class so that it can provide special behaviour to it at runtime and they do not have any method declarations.
Example: java.lang.Cloneable java.io.Serializable java.util.EventListener

An interface which does not contain any methods is called a marker interface.

e.g:java.io.Cloneable

      java.io.Serializable

      java.io.EventListener