What is causing an error to occur when I use MyConsumer<String> to implement Consumer<String>?

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The error is most likely occurring because MyConsumer is not implementing all the abstract methods of the Consumer interface. The Consumer interface has only one abstract method, accept(), which takes a single argument of type T and returns no value. Therefore, MyConsumer must provide an implementation for that method.

To fix the error, you need to make sure that your MyConsumer class implements the accept() method declared in the Consumer interface. If you are still having trouble, you can post your code and the full error message for further assistance.