For an ArrayList to be used, it first needs be imported into the program. This is achieved by including the command import java.util.ArrayList; at the top of the program. Creating a new list is done ...

Arraylist is an heterogeneous collection of objects where each object can be indexed individually. while writing an application there could be some scenarios where we have arraylist object filled with ...

Caused by: com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of VALUE_STRING token at [Source: ...