Which of the following statements is correct?
a) interfaces are classes.
b) a class can implement more than one interface type.
c) all fields in an interface are private.
d) a class can implement only one interface type.

B) A class can implement more than one interface type.

Explanation:

A Java class can implement multiple interfaces.

For example:

class Test implements java.io.Serializable,java.lang.Runnable{

/* The class should contain method signatures for all the methods defined in all the interfaces it implements */

}

Note that a java class can inherit from only one superclass but this restriction is not applicable while implementing multiple interfaces.

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