error message Failed to instantiate javautilList Specified class is an interfaceorgspringframeworkbeansBeanInstantiationException Failed to instantiate javautilList Specified class is an interface

This error message is thrown when trying to instantiate a Java List object, but the specified class is an interface instead of a concrete class.

In Java, you cannot directly instantiate an interface because it does not provide a concrete implementation. Instead, you need to use a concrete class that implements the interface to create an instance of the List.

To resolve this error, you should choose a concrete class that implements the List interface and use it to create the instance. For example, you can use the ArrayList class, which is a commonly used implementation of the List interface:

List<String> list = new ArrayList<>();

Make sure to import the necessary classes for the List and ArrayList, if they haven't been imported already:

import java.util.List;
import java.util.ArrayList;

By using a concrete class that implements the List interface, you will be able to successfully instantiate the List object without encountering the "Specified class is an interface" error