ava SE 1.5 provides ProxySelector class to detect the proxy settings. If there is a Direct connection to Internet the Proxy type will be DIRECT else it will return the host and port.
Example below illustrates this functionality:
public class testProxy {
public static void main(String[] args) {
try {
System.setProperty("java.net.useSystemProxies","true");
List l = ProxySelector.getDefault().select(
new URI("http://www.yahoo.com/"));
for (Iterator iter = l.iterator(); iter.hasNext(); ) {
Proxy proxy = (Proxy) iter.next();
System.out.println("proxy hostname : " + proxy.type());
InetSocketAddress addr = (InetSocketAddress)
proxy.address();
if(addr == null) {
System.out.println("No Proxy");
} else {
System.out.println("proxy hostname : " +
addr.getHostName());
System.out.println("proxy port : " +
addr.getPort());
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
} |
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