inputstream
out
字節讀取,輸入流
reader
writer
字符輸入輸出流
fileinputstream
out
對文件讀取,寫入,字節流
filereader
writer
對文件讀取,寫入,字符流
bufferedinputstream
out
字節緩沖輸入輸出流
bufferreader
bufferwriter
字符緩沖輸入輸出流
bytearrayinputstream
out
對內存里面的字節數組進行讀寫
inputstreamreader
out
把字節轉化成字符
datainputstream
out
printstream
printwriter
打印流
objectinputstream
out