BIO与NIO读写文件对比

1. BIO: blocking input/output  同步阻塞

 public static void fileTest() throws Exception {FileWriter fileWriter = new FileWriter(filePath, true);fileWriter.write("nihao");fileWriter.close();FileReader fileReader = new FileReader(filePath);BufferedReader bufferedReader = new BufferedReader(fileReader);StringBuffer bf = new StringBuffer();String str;while ((str = bufferedReader.readLine()) != null) {bf.append(str + "\n");}bufferedReader.close();fileReader.close();System.out.println(bf.toString());}

2.NIO: 同步非阻塞

 public static void fileNew() throws Exception {Files.write(Paths.get(filePath), "nihao".getBytes(StandardCharsets.UTF_8), StandardOpenOption.APPEND);byte[] data = Files.readAllBytes(Paths.get(filePath));System.out.println(new String(data, StandardCharsets.UTF_8));}