A.ClassNotFoundException B.IOException C.SQLException D.RemoteException
A.Reader類的read()方法用來從源中讀取一個字符的數據 B.Reader類的read(intn)方法用來從源中讀取一個字符的數據 C.Writer類的write(intn)方法用來向輸出流寫入單個字符 D.Writer類的write(Stringstr)方法用來向輸出流寫入一個字符串
A.voidrelease() B.voidclose() C.voidremove() D.voidflush()