<dependency> <groupId>org.codehaus.jettison</groupId> <artifactId>jettison</artifactId> <version>1.4</version> </dependency> JSONObject jsonObject = new JSONObject(); jsonObject.put("name", "John Doe"); jsonObject.put("age", 30); jsonObject.put("email", "johndoe@example.com"); String json = "{\"name\":\"John Doe\",\"age\":30,\"email\":\"johndoe@example.com\"}"; JSONObject jsonObject = new JSONObject(json); String name = jsonObject.getString("name"); int age = jsonObject.getInt("age"); String email = jsonObject.getString("email"); User user = new User(); user.setName(name); user.setAge(age); user.setEmail(email);