Java:附加文本文件时跳过用户输入的第一行？

Question

所以我试图接受用户的文本行，以便将其附加到 txt 文件中。但是，程序运行后，用户输入的第一行不会出现在附加文件中。

这是部分代码:

System.out.println("enter advice (hit return  on empty line to quit):");
String advice = keyboard.nextLine();

FileWriter fw = new FileWriter(inputFile, true);
PrintWriter pw = new PrintWriter(fw);

for(int n = 1; n <= 2; ++n)
{
  advice = keyboard.nextLine();
  pw.print(advice);
}

pw.close();
keyboard.close();

这是代码的示例运行:

$ java Advice
enter input filename: Advice.txt **enter**
1: fully understand the given problem
2: do analysis and design first before typing
enter advice (hit return  on empty line to quit):
a **enter**
b **enter**

Thank you, goodbye!
$ cat Advice.txt
1: fully understand the given problem
2: do analysis and design first before typing
b

有什么想法吗？谢谢!

Answer 1

用户输入的第一行将被捕获，但不会写入文件。字符串建议=keyboard.nextLine();当您写入文件时，您将接受下一个用户输入