com.google.gson
library needs to be added to use this code.
Here is the example string:
String companyDetails = {"companyName":"abcd","address":"abcdefg"}
JSON strings can be parsed using below syntax in Java:
JsonParser parser = new JsonParser();
JsonElement jsonElement = parser.parse(companyDetails);
JsonObject jsonObj = jsonElement.getAsJsonObject();
String comapnyName = jsonObj.get("companyName").getAsString();