is safer than using threads in two ways: * When waiting for a thread to return a result, if the thread dies with an exception then the caller must either re-throw the exception ('wait') or handle it ('waitCatch'); the exception cannot be ignored. A valid JSON object has the following syntax: Source: json. public class JSONCompare extends java. Apache Groovy is a powerful, optionally typed and dynamic language, with static-typing and static compilation capabilities, for the Java platform aimed at improving developer productivity thanks to a concise, familiar and easy to learn syntax. Copy the converted JAVA code and make it work for you. (I wrote about. Let's jump right in! the code is available in this GitHub repo. writeValue() - Java Objects to JSON. See the differences between the objects instead of just the new lines and mixed up properties. Before you start with encoding and decoding JSON using Java, you need to install any of the JSON modules available.