How to check it certain url exist?

Question

hi there....
can someone help me??
is it possible to check if certain url exist?
public class checkFile1{
     public static void main (String [] args) {
     String file = "http://www.yahoo.com";
     if (file = exist){
          open file;
     else{
          System.out.println("nv exist");
Message was edited by:
n_dilah

Answer 1

i try doing this but how come it give me false instead off returning me true?
System.out.println(exists("http://www.yahoo.com/"));
System.out.println(exists("http://www.rgagnon.com/"));
static boolean exists(String URLName){
try {
HttpURLConnection.setFollowRedirects(false);
// note : you may also need
// HttpURLConnection.setInstanceFollowRedirects(false)
HttpURLConnection con =
(HttpURLConnection) new URL(URLName).openConnection();
con.setRequestMethod("HEAD");
return (con.getResponseCode() == HttpURLConnection.HTTP_OK);
catch (Exception e) {
e.printStackTrace();
return false;
}