YoutubeVideoReader.java

package kb.howtokb.usecase;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

public class YoutubeVideoReader {

	/**
	 * Read youtube video information in json format
	 * @param input
	 * @return map: youtube video id -- youtube video object
	 * @throws FileNotFoundException
	 * @throws IOException
	 * @throws ParseException
	 */
	public static Map<String, YouTubeObj> tubeReader(String input) throws FileNotFoundException, IOException, ParseException{
		
		Map<String, YouTubeObj> allvideos = new HashMap<>();
		
		JSONParser parser = new JSONParser();
		try (BufferedReader br = new BufferedReader(new FileReader(input))) {
			String sCurrentLine;
			while ((sCurrentLine = br.readLine()) != null) {
				Object obj = parser.parse(sCurrentLine);
				JSONObject jsonObject = (JSONObject) obj;
				YouTubeObj utube = YouTubeObj.toYouTubeObj(jsonObject);
				allvideos.put(utube.getId(), utube);
				//System.out.println(utube.getTitle());
				System.out.println(utube.getId());
			}
		}
		return allvideos;
	}
}