A.FileOutputStream B.FileInputStream C.BufferedInputStream D.BufferedOutputStream
A.InputStream B.OutputSteam C.Writer D.StringWriter
A.輸入流:只能從中讀取數(shù)據(jù),不能向其寫(xiě)入數(shù)據(jù) B.輸出流:只能向其寫(xiě)入數(shù)據(jù),不能從中讀取數(shù)據(jù) C.輸入流指的是將數(shù)據(jù)以字符或字節(jié)的形式從外部媒介比如文件、數(shù)據(jù)庫(kù)等讀取到內(nèi)存中(可理解為當(dāng)前項(xiàng)目中),所以也分為字節(jié)輸入流和字符輸入流 D.輸出流指的是將內(nèi)存中輸出到外部媒介,也分為字符輸出流和字節(jié)輸出流