?– It is not having any method because it is a TAGGED or MARKER interface.
In Java, the Cloneable
interface is a marker interface, which means it doesn’t contain any methods. Marker interfaces are used to indicate a special behavior or capability that a class should have. In the case of Cloneable
, it indicates that the objects of the class implementing it can be cloned using the Object
class’s clone()
method.
However, it’s important to note that just implementing the Cloneable
interface doesn’t guarantee a successful cloning. The class must also override the clone()
method from the Object
class and provide its own implementation. The clone()
method in the Object
class is declared as protected, so the overriding method should also be declared as public.
Here’s an example:
public class MyClass implements Cloneable {
// fields and methods of the class
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}
In this example, MyClass
implements the Cloneable
interface, and it overrides the clone()
method to call super.clone()
. The CloneNotSupportedException
is thrown by Object
‘s clone()
method, so it needs to be handled or declared in the method signature.