read json file in java gjoson code example
Example: how to read from json files in java
package com.howtodoinjava.demo.jsonsimple;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
public class ReadJSONExample
{
@SuppressWarnings("unchecked")
public static void main(String[] args)
{
JSONParser jsonParser = new JSONParser();
try (FileReader reader = new FileReader("employees.json"))
{
Object obj = jsonParser.parse(reader);
JSONArray employeeList = (JSONArray) obj;
System.out.println(employeeList);
employeeList.forEach( emp -> parseEmployeeObject( (JSONObject) emp ) );
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
}
}
private static void parseEmployeeObject(JSONObject employee)
{
JSONObject employeeObject = (JSONObject) employee.get("employee");
String firstName = (String) employeeObject.get("firstName");
System.out.println(firstName);
String lastName = (String) employeeObject.get("lastName");
System.out.println(lastName);
String website = (String) employeeObject.get("website");
System.out.println(website);
}
}