记忆系列-Java IO的缓存输入输出流(高效流) 發布於 7 个月前 (09月02日) – 325 次检阅

在之前我自己也mark了字节和字符的流，但是呢读取数据量比较大时，速度是8是会有点慢？影响到你郭良俊自己的脾气呢?

好了~那就在内存/不怕被坑情况下自己弄一下呗~好了马记录起~

缓冲流，根据流的分类:字节缓冲流和字符缓冲流。目的可能提高IO流的读写速度，至于利弊嘛–>出门右拐–>百度/谷歌走起~

字节缓冲流：BufferedInputStream、BufferedOutputStream

字符缓冲流：BufferedReader、BufferedWriter

它们的内部都包含了一个缓冲区，通过缓冲区读写，就可以提高了IO流的读写速度，做到缓存的作用~

字节缓冲流例子

String destFile = "D:"+File.separator+"destfile.txt";          String lineSeparator = System.getProperty("line.separator");          //字节缓冲输出流          try(FileOutputStream fos = new FileOutputStream(destFile,true);              BufferedOutputStream bos = new BufferedOutputStream(fos)) {              bos.write(lineSeparator.getBytes());              bos.write("hello FileOutputStream".getBytes());              //使用try-with-resources优雅关闭资源(https://199604.com/1241)              //bos.close();          } catch (FileNotFoundException e) {              e.printStackTrace();          } catch (IOException e) {              e.printStackTrace();          }          //字节缓冲输入流             try {              FileInputStream fis = new FileInputStream(destFile);              BufferedInputStream bis = new BufferedInputStream(fis);              byte[] buffer = new byte[1024];              int len = -1;              while ((len = bis.read(buffer))!=-1){                  System.out.println(new String(buffer,0,len));              }              fis.close();              bis.close();          } catch (FileNotFoundException e) {              e.printStackTrace();          }catch (IOException e1){              e1.printStackTrace();          }

字符缓冲流例子

tring destFile = "D:"+File.separator+"destfile.txt";          String lineSeparator = System.getProperty("line.separator");          //字符输出流          try(BufferedWriter out = new BufferedWriter(new FileWriter(destFile,true))){              out.write("郭大傻?");              out.write(lineSeparator);              out.write("结束~");              //使用try-with-resources优雅关闭资源(https://199604.com/1241)              //out.close();          } catch (IOException e) {              e.printStackTrace();          }          //字符输入流          try(BufferedReader in = new BufferedReader(new FileReader(destFile))) {              String line = null;              while ((line= in.readLine())!=null){                  System.out.println(line);              }          } catch (FileNotFoundException e) {              e.printStackTrace();          } catch (IOException e) {              e.printStackTrace();          }

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