What is marker interface?Tell name of atleast three one?

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Aug 13th, 2005
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V.R.K.Sekhar

Oct 27th, 2005
One of the "clean" features of the Java programming language is that it mandates a separation between interfaces (pure behavior) and classes (state and behavior). Interfaces are used in Java to specify the behavior of derived classes.
Often you will come across interfaces in Java that have no behavior. In other words, they are just empty interface definitions. These are known as marker interfaces. Some examples of marker interfaces in the Java API include:
 - java,lang.Cloneable- java,io.Serializable- java.util.EventListener