How to convert JSON to a Map object?

Java application web services uses two way to communicate with other web application one by XML file and othe by Json. While working with web services, I just want to know that how to convert JSON to a Map object ?. As a beginner, I am looking to explore such type of http://findnerd.com/askquestion/java to enhance my java skills. Can you please help me and give me a suitable answers of my query.

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Original message URL: https://devnet.jetbrains.com/message/5556017#5556017