Server returned HTTP response code: 429 for URL JAVA Reddit JSON

Question

I am trying to get the JSON file found here: https://www.reddit.com/r/arabfunny/top.json?limit=100
I have the following code:
static void getPost() throws Exception {
    String webPage = "https://www.reddit.com/r/arabfunny/top.json?limit=100";

URL url = new URL(webPage);
    URLConnection request = url.openConnection();
    request.connect();

JsonParser jp = new JsonParser();
    JsonElement root = jp.parse(new InputStreamReader((InputStream) request.getContent()));
    JsonObject rootobj = root.getAsJsonObject();
}

This code throws the following error when run:
Exception in thread "main" java.io.IOException: Server returned HTTP response code: 429 for URL: https://www.reddit.com/r/arabfunny/top.json?limit=100

Luke Prior · Answer

The problem was fixed by adding:
request.setRequestProperty("User-Agent", "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.2.2) Gecko/20100316 Firefox/3.6.2");

sercheo_87 · Answer

Fix problem is set Content type to UrlConnection
request.setRequestProperty("Content-Type", "application/json; utf-8");

Full code:
package com.example;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;

/**
 * Hello world!
 */
public class App {
    public static void main(String[] args) throws IOException {
        String webPage = "https://www.reddit.com/r/arabfunny/top.json?limit=100";

URL url = new URL(webPage);
        URLConnection request = url.openConnection();
        request.setRequestProperty("Content-Type", "application/json; utf-8");

JsonParser jp = new JsonParser();
        JsonElement root = jp.parse(new InputStreamReader((InputStream) request.getContent()));
        JsonObject rootobj = root.getAsJsonObject();
        System.out.println(rootobj);
    }
}

Server returned HTTP response code: 429 for URL JAVA Reddit JSON

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