How to iterate over JSONObject in Java to print all key values? Example Tutorial

Hello guys, if you are wondering how to iterate over a JSONObject in Java and print all its fields and values then you have come to the right place. In this article, I will show you how you can print all data from JSONObject in Java. If you know, In json-simple library, one of the top 5 and lightweight JSON library, JSON object is a wrapper class which contains the actual JSON message. In the last article, I have explained how to parse JSON in Java using json-simple library and one question which pops up can we iterate over JSONObject properties? Well, yes, you can iterate over all JSON properties and also get the values from the JSONObject itself. In this article, I'll show you how you can print all keys and value from JSON message using JSONOjbect and Iterator.