The easiest way is with GSON: https://mkyong.com/java/how-do-convert-java-object-to-from-json-format-gson-api/ https://mkyong.com/java/how-do-convert-java-obje

The easiest way is with GSON: https://mkyong.com/java/how-do-convert-java-object-to-from-json-format-gson-api/ https://mkyong.com/java/how-do-convert-java-object-to-from-j... You would just have to have annotations on the enum names to get the lowercase values in your example json.