DeadstockTask.java

import java.net.*;

import javax.net.SocketFactory;
import javax.net.ssl.SSLSocketFactory;

import java.io.*;

public class DeadstockTask {

	public static void main(String[] args) {
		// method 1: without HttpURLConnection
		try {
			// create a url connection
			URL deadstock = new URL("https://www.deadstock.ca/products.json");
			// our only goal here is to read it, so we can skip doing any fancy stuff besides getting an i/o connection
			BufferedReader input = new BufferedReader(new InputStreamReader(deadstock.openStream()));
			// since we are reading a json file, it would be best to read it into a string for further use (that is, if we were going to read the file)
			String json = "";
			// read line by line to get the file
			while(true) {
				String line = input.readLine();
				if(line == null) {
					break;
				}
				json += line;
			}
			System.out.println("Method 1: " + json);
			
			input.close();
		} catch(Exception e) {
			e.printStackTrace();
		}
		
		// method 2: with HttpURLConnection
		try {
			URL url = new URL("https://www.deadstock.ca/products.json");
			HttpURLConnection con = (HttpURLConnection)url.openConnection();
			
			con.setRequestMethod("GET");
			
			System.out.println("Recevied code " + con.getResponseCode());
			
			BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
			
			String json = "";
			
			while(true) {
				String s = reader.readLine();
				if(s == null) {
					break;
				}
				json += s;
			}
			
			reader.close();
			
			System.out.println("Method 2: " + json);
		} catch(Exception e) {
			e.printStackTrace();
		}
		
		
		/*
		// method 3: sockets
		// unfortunately, I get 403 forbidden with this code
		try {
			SocketFactory factory = SSLSocketFactory.getDefault();
			Socket  socket = factory.createSocket("www.deadstock.ca", 443);
			PrintWriter out = new PrintWriter(socket.getOutputStream(), false);
			BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
			
			// send our http request
			out.print("GET /products.json https/1.1\r\n");
			out.print("Host: www.deadstock.ca\r\n");
			out.print("Accept: application/json\r\n");
			out.print("User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)\r\n");
			out.print("\r\n");
			out.flush();
			
			String json = "";
			// read line by line to get the file
			while(true) {
				String line = in.readLine();
				if(line == null) {
					break;
				}
				json += line + '\n';
			}
			System.out.println("Method 3: " + json);
			
		} catch(Exception e) {
			e.printStackTrace();
		}*/
	}

}