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java.net.UnknownServiceException: protocol doesn't support input	at java.net.URLConnection.getInputStream(URLConnection.java:666)	at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:237)	at java.net.HttpURLConnection.getResponseMessage(HttpURLConnection.java:303)	at practice.MyClass.getResponseMessage(MyClass.java:12)	at practice.HelloWorld.doGet(HelloWorld.java:21)