    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.util.Properties;
    import java.net.InetSocketAddress;
    import java.net.Proxy;
    import java.net.ProxySelector;
    import java.net.URI;
    public class Main {
    	public static void main(String s[]) 
    	   throws Exception {
    		try {
    			Properties systemSettings = System.getProperties();
    			systemSettings.put("proxySet", "true");
    			systemSettings.put("http.proxyHost", 
    			         "proxy.mycompany1.local");
    			systemSettings.put("http.proxyPort", "80");
    			URL u = new URL("http://www.google.com");
    			HttpURLConnection con = (HttpURLConnection)
    			         u.openConnection();
    			System.out.println(con.getResponseCode() +  " : " +con.getResponseMessage());
    			System.out.println(con.getResponseCode() == HttpURLConnection.HTTP_OK);
    		}
    		catch (Exception e) {
    			e.printStackTrace();
    			System.out.println(false);
    		}
    		System.setProperty("java.net.useSystemProxies", 
    		      "true");
    		Proxy proxy = (Proxy) ProxySelector.getDefault().
    		      select(new URI("http://www.yahoo.com/")).iterator().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());
    		}
    	}
    }