UnknownHostException

[dmanojbaba]

I wanna access simple Http site...

I think ter is an error in the socket obj creation... pls help
urgent...


import java.io.*;
import java.net.*;
public class http
{
public static void main(String[] args)
{
try
{
OutputStream to_file = new FileOutputStrea m("f:
temp.txt");
URL url = new URL("http://www.wickedlysma rt.com/HeadFirst/
HeadFirstJava/HeadFirstJavaIn dex.html");
String protocol = url.getProtocol ();
String host = url.getHost();
int port = url.getPort();
if(port == -1) port = 80;
String filename =url.getFile();
System.out.prin tln(filename+"\ n\n");
Socket socket = new Socket(host, port);
InputStream from_server = socket.getInput Stream();
PrintWriter to_server = new PrintWriter(soc ket.getOutputSt ream());
to_server.print ("Get" + filename +"\n\n");
to_server.flush ();
byte[] buffer = new byte[4096];
int byte_read;
while((byte_rea d = from_server.rea d(buffer)) != -1)
{
to_file.write(b uffer,0,byte_re ad);
System.out.prin t((char)byte_re ad);


}


socket.close();
to_file.close() ;


}


catch(Exception e)
{
e.printStackTra ce();


}
}
}


Output:

C:\java\bin>jav a Http


/HeadFirst/HeadFirstJava/HeadFirstJavaIn dex.html


java.net.Unknow nHostException: www.wickedlysma rt.com
at java.net.PlainS ocketImpl.conne ct(PlainSocketI mpl.java:177)
at java.net.SocksS ocketImpl.conne ct(SocksSocketI mpl.java:364)
at java.net.Socket .connect(Socket .java:507)
at java.net.Socket .connect(Socket .java:457)
at java.net.Socket .<init>(Socket. java:365)
at java.net.Socket .<init>(Socket. java:178)
at Http.main(Http. java:20)


C:\java\bin>


the output file f:\temp.txt is created but empty...:(
pls help out from this error...

[dmjpro]

Use code tags.
I think your DNS resolver is not present.
Make sure that you have dns.jar.
Good Luck !

Kind regards,
Dmjpro.

[Nepomuk]

I wanna access simple Http site...

I think ter is an error in the socket obj creation... pls help
urgent...

[CODE=java]
import java.io.*;
import java.net.*;
public class http
{
public static void main(String[] args)
{
try
{
OutputStream to_file = new FileOutputStrea m("f:
temp.txt");
URL url = new URL("http://www.wickedlysma rt.com/HeadFirst/
HeadFirstJava/HeadFirstJavaIn dex.html");
String protocol = url.getProtocol ();
String host = url.getHost();
int port = url.getPort();
if(port == -1) port = 80;
String filename =url.getFile();
System.out.prin tln(filename+"\ n\n");
Socket socket = new Socket(host, port);
InputStream from_server = socket.getInput Stream();
PrintWriter to_server = new PrintWriter(soc ket.getOutputSt ream());
to_server.print ("Get" + filename +"\n\n");
to_server.flush ();
byte[] buffer = new byte[4096];
int byte_read;
while((byte_rea d = from_server.rea d(buffer)) != -1)
{
to_file.write(b uffer,0,byte_re ad);
System.out.prin t((char)byte_re ad);


}


socket.close();
to_file.close() ;


}


catch(Exception e)
{
e.printStackTra ce();


}
}
}
[/CODE]

Output:

C:\java\bin>java Http 


/HeadFirst/HeadFirstJava/HeadFirstJavaIndex.html 


java.net.UnknownHostException: www.wickedlysmart.com 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) 
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:364) 
at java.net.Socket.connect(Socket.java:507) 
at java.net.Socket.connect(Socket.java:457) 
at java.net.Socket.<init>(Socket.java:365) 
at java.net.Socket.<init>(Socket.java:178) 
at Http.main(Http.java:20) 


C:\java\bin>

the output file f:\temp.txt is created but empty...:(
pls help out from this error...

What line is that line 20?

Greetings,
Nepomuk

PS.: Please use CODE tags when posting.