Demonstrate URLConnection. : URLConnection « Network Protocol « Java
- Java
- Network Protocol
- URLConnection
Demonstrate URLConnection.
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.StringTokenizer;
public class MainClass {
public static void main(String args[]) throws Exception {
int c;
URL hp = new URL("http://www.internic.net");
URLConnection hpCon = hp.openConnection();
long d = hpCon.getDate();
if (d == 0)
System.out.println("No date information.");
else
System.out.println("Date: " + new Date(d));
System.out.println("Content-Type: " + hpCon.getContentType());
d = hpCon.getExpiration();
if (d == 0)
System.out.println("No expiration information.");
else
System.out.println("Expires: " + new Date(d));
d = hpCon.getLastModified();
if (d == 0)
System.out.println("No last-modified information.");
else
System.out.println("Last-Modified: " + new Date(d));
int len = hpCon.getContentLength();
if (len == -1)
System.out.println("Content length unavailable.");
else
System.out.println("Content-Length: " + len);
if (len != 0) {
InputStream input = hpCon.getInputStream();
int i = len;
while (((c = input.read()) != -1)) { // && (--i > 0)) {
System.out.print((char) c);
}
input.close();
} else {
System.out.println("No content available.");
}
}
}
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