JSON has been way of communication since long, between systems, modules or programs, especially in times of web services. JSON format has its own advantages such as ease of use, well supported by javascript and frameworks.
Hence it leads to have a framework in place that will ease out task of JSON to Java reading, writing , transformation of JSON data to Plain java objects etc. It can reduce lot of boilterplate code while dealing with JSON formatted data.
Jackson is an open source framework distributed under Apache license to address these problems. Principally, jackson has 3 approaches to address JSON to JAVA binding
- Data binding APIs – It can map JSON formatted objects to Java Plain Objects(POJO). It also provides certain level of configurability to tailor the data binding.
- JSON Tree – Set of APIs that would read JSON formatted input document and convert the in memory tree representation of JSON, analogous to DOM tree. Then provides APIs to deal with JSON tree.
- Streaming API – Set of APIs to read input JSON streams, it is analogous to Stax API for XML parsing.
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