JAVA读写文件如何避免中文乱码

/*** 读取文件内容** @param filePathAndName * String 如 c://1.txt 绝对路径 * @return boolean*/public static String readFile(String filePathAndName) { String fileContent = "";try {File f = new File(filePathAndName); if(f.isFile()&&f.exists()){ InputStreamReader read = new InputStreamReader(new FileInputStream(f),"UTF-8"); BufferedReader reader=new BufferedReader(read); String line; while ((line = reader.readLine()) != null) { fileContent += line;}read.close();}} catch (Exception e) { System.out.println("读取文件内容操作出错"); e.printStackTrace();}return fileContent;} 2、JAVA写入文件，避免中文乱码。