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  • 字符缓冲流

    字符缓冲流

    1.缓冲流:不具备读写数据的能力,可以提高读取数据的效率,扩展功能,内部维护字符数组                                                                    

                                                                              

     2.BufferedReader:缓冲输入字符流                                              

    1. 特殊功能:readLine()     读取一行数据                              

       1.创建通道并指定路径                                                    

        FIleReader reader = new FileReader(“D:\a.txt”);         

       2.创建缓冲流                                                            

        BufferedReader buffer = new BufferedReader(reader);     

       3.循环读取一行                                                          

        String string = null;                                                  

        while((string = buffer.readLine()) != null){                 

            System.out.println(string);                                        

    }                                                                      

       4.关闭流                                                                

        buffer.close();                                                    

                                                                               

    3.BufferedWrite:缓冲输出字符流                                            

    1.内部提供一个8192长度的字符数组作为缓冲区                           

    2.作用:                                                                  

          A)提高写入的效率                                                    

          B)提高FileWrite的功能                                              

     3. 特殊功能:newline();  数据换行显示                                  

      1.创建通道并指定路径                                                     

        FileWrite write = new FIleWrite(“D:\a.txt”);          

      2.建立缓冲流                                                             

        BuferedWrite buffer = new BufferedWrite(write);           

      3.数据换行显示                                                           

        buffer.newLine();                                       

      4.开始写入数据    //   也是系统换行                                  

        Buffer.write(“这是要写入的数据”);                                 

      5.关闭资源 (会自动调用flush())                                         

        bufferedWrite.close();

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  • 原文地址:https://www.cnblogs.com/z-jun/p/6179991.html
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