File文件對象
文件操作1
- isDirectory
- length()
- size()
- exists()
- isFile()
文件操作2
- listFiles()返回文件數組
- getParent()
- mkdir()
- createNewFile()
- listRoots()
- delete()
字符流
Writer字符寫出流
- FileWriter
- read()
- PrintWriter
Reader字符讀入流
- FileReader
- write()
- BufferedReader
字節流
OutputStream
- FileOutputStream文件輸出流
- write()
InputStream
- FileInputStream文件輸入流
- read()
數據流
DataOutputStream數據寫出流
- writeInt()寫出整數
- writeBoolean()寫出布爾型
- writeUTF()寫出字符串
DataInputStream數據的讀入流
- readInt()
- readBoolean()
- readUTF()