I read from a URL type in Java and get the output line by line. But if the page didn't exist, it throws a 404 error code.
How can I add a check if the response code is 200 (and not 404), get the line? And if it is 404, print something.
url = new URL("http://my.address.com/getfile/12345.txt");
Scanner s = new Scanner(url.openStream());
while (s.hasNextLine()) {
s.nextLine();
break;
}
try {
URL url = new URL("https://www.google.com/");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.connect();
int code = connection.getResponseCode();
if (code == HttpURLConnection.HTTP_OK) {// status 200
Scanner s = new Scanner(url.openStream());
while (s.hasNextLine()) {
s.nextLine();
break;
}
}else if(code == HttpURLConnection.HTTP_NOT_FOUND){//status 404
// TODO: url not found
}else{
// TODO: other reponse status
}
}
catch (IOException ex) {
Logger.getLogger(Week8.class.getName()).log(Level.SEVERE, null, ex);
}
This is sample code for your scenario. I used google site for URL.
