Let us discuss how to parse JSON objects using Java with the help of below example.
Steps:
1. Include JSON jar in classpath.
2. Define JSON string.
3. Create JSON parser object
4. Parse JSON string using JSON parser.
5. Process the object.
Example:
JSONTest.java
package com.javawithease.business; import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException; /** * This class is used to parse the JSON string. * @author javawithease */ public class JSONTest { public static void main(String args[]) { // JSON String String jsonString = "[{\"name\":\"Swati\",\"rollNo\":" + "\"MCA/07/01\",\"id\":10},{\"name\":\"Prabhjot\",\"" + "rollNo\":\"MCA/07/39\",\"id\":50}]"; // Create JSON parser object. JSONParser parser = new JSONParser(); try { // Parse JSON string using JSON parser. Object object = parser.parse(jsonString); JSONArray array = (JSONArray) object; System.out.println("First object:"); System.out.println(array.get(0)); // Get JSON object from JSON array. JSONObject jsonObject = (JSONObject) array.get(1); System.out.println("Second object:"); System.out.println("Name:" + jsonObject.get("name")); } catch (ParseException e) { e.printStackTrace(); } } } |
Output:
First object: {"id":10,"rollNo":"MCA\/07\/01","name":"Swati"} Second object: Name:Prabhjot |
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