HTTP status code
List of HTTP status codes : http://en.wikipedia.org/wiki/List_of_HTTP_status_codes 1xx Informational 2xx Success 3xx Redirection 4xx Client Error 5xx Server Error java.net.HttpURLConnection.getResponseCode(): Gets the status code from an HTTP response message. For example： the following codes from w w w . c ode java. net/java-se/networking/use-httpurlconnection-to-download-file-from-an-http-url /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; /** * A utility that downloads a file from a URL. * @author www.codejava.net */ public class HttpDownloadUtility { ...