A.Socket B.int C.void D.string
A.BufferedReader中有readLine方法 B.BufferedReader是字符流 C.BufferedReader的readLine方法,沒有讀到數(shù)據(jù)時(shí)會(huì)立即返回 D.BufferedReader的readLine方法,沒有讀到數(shù)據(jù)時(shí)會(huì)阻塞
A.System B.Socket C.InputStream D.System.in