Boilerplate to parse JSON in Java

ParseJson.java

/**
 * Download the latest json-java.jar from https://github.com/stleary/JSON-java#readme
 * Place it in the same folder as this file
 *
 * Compile (Windows): javac -cp .;json-java.jar ParseJson.java
 * Compile (Unix): javac -cp .:json-java.jar ParseJson.java
 *
 * Run (Windows): java -cp .;json-java.jar ParseJson FILENAME.json
 * Run (Unix): java -cp .:json-java.jar ParseJson FILENAME.json
 */

import org.json.JSONObject;

import java.nio.file.Files;
import java.nio.file.Paths;

import java.io.IOException;

class ParseJson {
  public static void main(String[] args) throws IOException {
    if (args.length < 1) {
      System.out.println("Usage: java -cp .:json-java.jar ParseJson FILENAME.json");
      System.exit(1);
    }

    String fileName = args[0];
    String fileContents = new String(Files.readAllBytes(Paths.get(fileName)));
    JSONObject data = new JSONObject(fileContents);

    System.out.println(data.toString(2));
  }
}