I am getting the stack trace error below when I hit the line huc.connect with the code below to verify the URL exists. I can use the same link with HTTP instead of HTTPs and it works fine. I have also tried using HttpsURLConnection but had the same error in the stack trace. Is there another method I can use to verify that a URL exists?
URL u = new URL("https://www.postgresql.org/docs/9.4/static/catalogs.html");
//u.toURI(); //to check the syntax
HttpURLConnection huc = (HttpURLConnection)u.openConnection();
huc.setRequestMethod("GET");
//huc.setRequestMethod("HEAD");
huc.connect();
System.out.println(huc.getResponseCode());
Strack Trace:
Exception in thread "main" javax.net.ssl.SSLException: Received fatal alert: protocol_version
at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)
at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:1959)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1077)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1312)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1323)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:563)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153)
at UrlTester2.main(UrlTester2.java:31)
