Snippet.java

package snippet;

import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.ProxySelector;
import java.net.URI;
import java.util.Iterator;
import java.util.List;

public class Snippet {
	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();
	        }
	    }
}