public void ex1(View w){
        String ans = "";
        try{
            URL url = new URL("http://www.example.com");
            URLConnection con =(URLConnection) url.openConnection();
            con.connect();
            InputStream is = con.getInputStream();
            int r = is.read();
            while(r != -1){
                ans += (char) r;
                r = is.read();
            }

        }
        catch(Exception e){ ans += "Error";}
        TextView s = (TextView) findViewById(R.id.textView1);
        s.setText(ans);
    }