CSS font stacks & developer FAQs with Web standards
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A: An interface typically represents something that is “Processable” in a particular way. Marker interfaces don't have any interface methods, they usually signify a property or state that any Java class may have that cannot be defined by a method signature. An example would be an Immutable interface, since a fundamental characteristic of immutable classes is the absence of mutator methods.
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Can you show an example marker interface?