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| String filepath = "D:\\a.txt"; File file = new File(filepath); String[] filenames = file.list(); File[] files = file.listFiles();
FileOutputStream fos = new FileOutputStream(file);
FileInputStream fis = new FileInputStream(file);
FileInputStream fis = new FileInputStream(file); int len;
byte[] b = new byte[1024];
while (( len = fis.read(b))!=-1) { System.out.println(new String(b, 0, len)); }
fis.close();
FileReader fr = new FileReader(file);
FileWriter fw = new FileWriter(file);
BufferedInputStream bis = new BufferedInputStream(new FileInputStream("bis.txt"));
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("bos.txt"));
BufferedReader br = new BufferedReader(new FileReader("br.txt")); BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new FileWriter("bw.txt"));
InputStreamReader isr = new InputStreamReader(new FileInputStream("in.txt") , "GBK"); OutputStreamWriter osr = new OutputStreamWriter(new FileOutputStream("out.txt") , "GBK");
ObjectInputStream in = new ObjectInputStream(new FileInputStream("employee.txt"));
ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("employee.txt"));
PrintStream ps = new PrintStream("ps.txt");
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