Java APIs

I was using this below function and working fine few days before to get the scraps of my orkut friends.
Now a days
i am getting the error below like this
java.net.MalformedURLException: unknown protocol: https

at java.net.URL.<init>(URL.java:508)

at java.net.URL.<init>(URL.java:404)

at sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLCon

nection.java:773)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon

nection.java:570)

at OrkutScraps.get_input_stream(OrkutScraps.java:156)

at OrkutScraps.get_number_of_friends(OrkutScraps.java:123)

at OrkutScraps.main(OrkutScraps.java:70)

java.lang.StringIndexOutOfBoundsException: String index out of range: -43

at java.lang.String.substring(String.java:2044)

at OrkutScraps.get_number_of_friends(OrkutScraps.java:129)

at OrkutScraps.main(OrkutScraps.java:70)


Could you please help me solution for this...

public static String get_input_stream(String url)
{
	    BufferedReader br;
            URL server; 
            HttpURLConnection connection;
            byte b[] = new byte[200];
	    String abc="";
	    Date first_scrap_date=new Date();
	    try
	    {
		server = new URL(url);
		connection = (HttpURLConnection)server.openConnection();
                         	
		//String encodedAuthString ="Basic " + new sun.misc.BASE64Encoder().encode(authString.getBytes());
		connection.setUseCaches(true);
		//connection.setRequestProperty("Proxy-authorization", encodedAuthString);
		connection.setFollowRedirects(true);
		connection.setAllowUserInteraction(true);
		// This cookie is for s.venkata.reddy@gmail.com. You can set the cookie for your own ID. To get your id cookie follow below steps
		connection.setRequestProperty("Cookie", cookiename_and_value);// using the latest cookie value after log in from mozilla getting the cookie value.
		connection.connect();
		DataInputStream dis = new DataInputStream(connection.getInputStream());
		while(dis.read(b)!= -1) 
		   abc=abc+new String(b);
	    }
	    catch(Exception e)
	    {
		    System.out.println("Http error:"); 
 e.printStackTrace();
		    return new String("error");
	    }
         return abc;
}