java7カプセル化の環境ではエラー発生、カプセル化を外してjava8にすると問題ない
httpsをhttpにしてもエラーは出ないがブラウザで開くとhttpsにリダイレクトしてるので問題はそういう事ではなさげ
下記はそのエラーだけどやっぱSSL関連でコケてる臭いがする

Connection reset
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at sun.security.ssl.InputRecord.readFully(Unknown Source)
at sun.security.ssl.InputRecord.read(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.HttpURLConnection.getResponseCode(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
at org.monazilla.v2c.V2CHttpUtil.getImageFile(V2CHttpUtil.java:2051)
at org.monazilla.v2c.V2CLink$DownloadImageThread.run(Unknown Source)