Java IO操作

Posted 2022-10-16 kikyoqiang

111

    private static void FileInputStream() throws IOException 
        FileInputStream fis = new FileInputStream("fos.txt");
        // int by = fis.read();
        // System.out.println(by);
        // System.out.println((char) by);
        //
        // by = fis.read();
        // System.out.println(by);
        // System.out.println((char) by);
        // int by = fis.read();
        // while (by != -1) 
        //     System.out.print((char) by);
        //     by = fis.read();
        // 
        int by;
        while ((by = fis.read()) != -1) 
            System.out.println((char) by);
        
        fis.close();
    

    private static void FileOutputStream() 
        FileOutputStream fos = null;
        try 
            fos = new FileOutputStream("fos.txt", true);
            for (int i = 0; i < 5; i++) 
                fos.write("hello".getBytes());
                fos.write("\r\n".getBytes());
            
         catch (IOException ex) 
            ex.printStackTrace();
         finally 
            if (fos != null) 
                try 
                    fos.close();
                 catch (IOException e) 
                    e.printStackTrace();