Which of the following is true about interfaces in java?1) An interface can contain following type of members.....public, static, final fields (i.e., constants)....default and static methods with bodies 2) An instance of interface can be created. 3) A class can implement multiple interfaces. 4) Many classes can implement the same interface.
Question
Which of the following is true about interfaces in java?1) An interface can contain following type of members.....public, static, final fields (i.e., constants)....default and static methods with bodies 2) An instance of interface can be created. 3) A class can implement multiple interfaces. 4) Many classes can implement the same interface.
Solution
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True - An interface in Java can contain public, static, final fields (constants) and default and static methods with bodies. This is one of the key features of interfaces in Java.
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False - An instance of an interface cannot be created. You can only create instances of classes that implement an interface.
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True - A class in Java can implement multiple interfaces. This is a feature of Java that provides a form of multiple inheritance, as a class can inherit the behavior of multiple interfaces.
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True - Many classes can implement the same interface. This is a common practice in Java, where different classes can implement the same interface to ensure a common set of behaviors.
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