java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.net.Socket.(Socket.java:264)
at java.net.Socket.(Socket.java:100)
at sun.net.NetworkClient.doConnect(NetworkClient.java:56)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:322)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:433)
at sun.net.www.http.HttpClient.(HttpClient.java:262)
at sun.net.www.http.HttpClient.(HttpClient.java:272)
at sun.net.www.http.HttpClient.New(HttpClient.java:284)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:372)
at undefined.TestBooter.main(TestBooter.java:26)

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