Top Most How to Convert JSON array to String array in Java - GSon example

JSON array is a ordered collection of values, which are enclosed within brackets e.g. [] and separated by comma. In this Java tutorial we will convert JSON Array to String array in Java and subsequently create JSON from Java String Array. This tutorial is similar to our last article in JSON about How to convert JSON object to Java object, instead of JSON object, here we will convert JSON array to String array or List in Java. As I said earlier, there are lot's of open source library out there which can help to parse JSON data format and we have already seen Jackson library in our last example. In this tutorial we will use GSON to parse JSON data format and create Java String array or Listfrom JSON array representation. Given the popularity of JSON as lightweight alternative of XML to transfer data from Server to client in web applications, it's becoming imperative to know about JSON data format and parsing JSON string, much like parsing XML documents and knowing about different XML parsers e.g. DOM or SAX. Since Java application development is more about reusing existing library, then coding yourself, its important to know what is available, and which library other programmers are using. So far we have seen Jackson library, and here we will explore another one called GSon.

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Top Most How to convert JSON String to Java object - Jackson Example

JSON, stands for JavaScript object notation, is a light weight text or string representation of object and quickly becoming a popular data exchange format. Though it's pretty early to say that JSON is going to replace XMLas popular data interchange format, It is certainly providing an alternative. JSON represent data in two format either an object or an array. JSON object is an unordered collection of key and value, similar to String representation of hashtable. On the other hand JSON Array is an ordered collection of values. Main difference between  JSON Object and  JSON array is there representation. JSON object is started with left brace { and ends with right brace } and key values are separated using colon (:). On the other hand JSON Array starts with left bracket [ and ends with right bracket ] and each value is separated with comma. By looking at structure, You can write  your JSON parser to parse JSON object or array to Java object, but you don't need to. There are lot of open source library in Java which provides tried and tested way of converting JSON String to Java object e.g. Jackson and GSON. In this Java tutorial we will see example of converting a JSON String to Java object using Jackson library

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