FileOutputStream中和FileWriter的换行不同

注：回车换行

windows中："\r\n"

linux:"\n"

1.字节输出流

FileOutputStream fos=new FileOutputStream("charstream\\a.txt");

fos.write(97);

fos.write("\r\n".getBytes());

fos.write(98);

2.字符输出流

Scanner sc=new Scanner(System.in);

System.out.println("请输入用户名：");

String username=sc.next();

System.out.println("请输入密码：");

String password=sc.next();

FileWriter fw=new FileWriter(new File("charstream\\a.txt"));

fw.write(username);

fw.write("\n");

fw.write(password);

fw.flush();

fw.close();

3.  .newLine();跨平台回车换行