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[单选题]
HttpURLConnection类继承自()类。
A.Http
B.URLConnection
C.Connection
D.URL
查看答案
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A.Http
B.URLConnection
C.Connection
D.URL
A.getInputStream
B.getResponseCode
C.connection
D.disconnect
A.getResponseCode
B.getInputStream
C.getConnected
D.setConnected
A.connection.setDoOutput(true)
B.connection.connect()
C.connection.setRequestMethod("POST")
D.connection.setDoInput(true)