Generalive

There are times when it is necessary to convert a list of user-defined objects to string and later on retrieve it as a list in its original form. Example: like storing it into a Redis cache . How do we do that?  ObjectMapper Steps: 1. ObjectMapper objectMapper = new ObjectMapper(); First, initialize ObjectMapper. 2. List<YourClass> listObj ; Create and initialize your list of user-defined object. where, YourClass is a class having multiple variables. Example - class YourClass{ String abc; String xyz; } 3.  String convertedStr = objectMapper.writeValueAsString(listObj); This is the string conversion of the list. 4.  listObj = objectMapper.readValue(convertedStr, new TypeReference<List<YourClass>>(); And we are back with your list object.