How can I iterate JSON objects in Java programming language?

 In the context of Java programming language, you can iterate through a JSON object in Java programming language by using a library like Jackson or even Gson. Here is the example used by Jackson:-

Import com.fasterxml.jackson.databind.JsonNode;

Import com.fasterxml.jackson.databind.ObjectMapper;

Public class JsonIterator {

    Public static void main(String[] args) {

        String jsonString = “{”name”:”John”,”age”:30,”city”:”New York”}”;

        Try {

            ObjectMapper objectMapper = new ObjectMapper();

            JsonNode jsonNode = objectMapper.readTree(jsonString);

            Iterator fieldNames = jsonNode.fieldNames();

            While (fieldNames.hasNext()) {

                String fieldName = fieldNames.next();

                JsonNode value = jsonNode.get(fieldName);

                // Your logic here, for example:

                System.out.println(“Field: “ + fieldName + “, Value: “ + value);

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}

This above coding would use the Jackson library for parsing JSON string and then after it would help in iterating through the fields of the JSON object. You can also customize the logic within the loop to suit your particular needs and requirements like as extraction of the values and performing certain actions based on the conditions.