Twitch api in java?

API
3

i have error with this:
String json = API.readJsonFromUrl(“http://api.justin.tv/api/stream/list.json?channel=" + channelname + "”);
error:
[13:11:59 WARN]: java.net.MalformedURLException: no protocol: http://api.justin.tv/api/stream/list.json?channel=manwojciech
[13:11:59 WARN]: at java.net.URL.(URL.java:586)
[13:11:59 WARN]: at java.net.URL.(URL.java:483)
[13:11:59 WARN]: at java.net.URL.(URL.java:432)
how to repair this?