Java中的动作侦听器等待

Question

Trying to make a nifty little program, but I think it's trying to run the code with the GET request, without waiting for the user input. It's not that much code, so if you could help me by directing me to a resource where I could find info to fix that issue it'd be awesome.

@SuppressWarnings("unused")
public class Test {

    public static void main(String args[]) throws IOException {
        BufferedReader rd;
        OutputStreamWriter wr;
        String movie = null;
        Console console = System.console();
        movie = console.readLine("Enter input:");
        try {
            URL url = new URL("http://www.imdbapi.com/?i=&t=" + movie);
            URLConnection conn = url.openConnection();
            conn.setDoOutput(true);
            wr = new OutputStreamWriter(conn.getOutputStream());
            wr.flush();

            // Get the response
            rd = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            line = rd.readLine();
            if (line != null) {
                System.out.println(line);
            } else {
                System.out.println("Sorry! That's not a valid URL.");
            }
        } catch (UnknownHostException codeyellow) {
             System.err.println("Caught UnknownHostException: " + codeyellow.getMessage());
        }
    }

}

Answer 1

Your code gives a NullPointerException on that line:

movie = console.readLine("Enter input:");

That means that the console object doesn't get initialized.

Try reading input like this:

Scanner s = new Scanner(System.in);
System.out.println("Enter input:");
movie = s.nextLine();