How to read Json data using JsonReader?

<project xmlns="http://maven.apache.org/POM/4.0.0" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
    					http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>json_exmp</groupId>
  <artifactId>json_exmp</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <dependencies>
  	<dependency>
  		<groupId>javax.json</groupId>
  		<artifactId>javax.json-api</artifactId>
  		<version>1.0</version>
  	</dependency>
  	<dependency>
  		<groupId>org.glassfish</groupId>
  		<artifactId>javax.json</artifactId>
  		<version>1.0.4</version>
  	</dependency>
  </dependencies>
</project>

{
    "emp_id": 1017,
    "emp_name": "Nagesh Y",
    "emp_designation": "Manager",
    "department": "Java2Novice",
    "salary": 30000,
    "direct_reports": [
        "Nataraj G",
        "Kalyan",
        "Mahitha"
    ],
    "address": {
        "street":"MG Road",
        "city":"Bangalore"
    }
}

package com.javaapi.json.examples;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;

import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;

public class ReadJsonExample {

	public static void main(String a[]){
		
		File jsonInputFile = new File("/Users/java2novice/jsonInput.txt");
		InputStream is;
		try {
			is = new FileInputStream(jsonInputFile);
			// Create JsonReader from Json.
			JsonReader reader = Json.createReader(is);
			// Get the JsonObject structure from JsonReader.
			JsonObject empObj = reader.readObject();
			reader.close();
			// read string data
	        System.out.println("Emp Name: " + empObj.getString("emp_name"));
	        // read integer data
	        System.out.println("Emp Id: " + empObj.getInt("emp_id"));
			// read inner json element
	        JsonObject addrObj = empObj.getJsonObject("address");
	        System.out.println("City: " + addrObj.getString("city"));
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

Emp Name: Nagesh Y
Emp Id: 1017
City: Bangalore