A.BufferedInputStream B.FileInputStream C.DataInputStream D.FileReader
A.InputStream B.Reader C.writer D.OutputStream
A.將數(shù)據(jù)結(jié)構(gòu)或?qū)ο筠D(zhuǎn)換成字符的過程 B.將數(shù)據(jù)結(jié)構(gòu)或?qū)ο筠D(zhuǎn)換成二進(jìn)制串的過程 C.將二進(jìn)制串轉(zhuǎn)化成對(duì)象 D.將對(duì)象轉(zhuǎn)為字符串