Java格式化器不允许新行字符？

Question

所以，我有以下代码写入文件：

Formatter output = ....... // Creating the formatter works, writes to appropriate file.

output.format("%d\n", records.length);
for(GradeRecord gR:records)
{
    output.format(gR.toString() + "\n");
}

.

只有问题是，输出没有换行符。 如果我用“\ r”替换为“\ n”，则不起作用。

...我不知道为什么这不起作用。输出是创建并正确写入。（我看到创建的文件，除了换行符之外，所有内容都已写入其中。）

Answer 1

you can use the format "%n" to output the platform specific newline using a formatter.

Answer 2

You want to use the correct line break string regardless of what platform it's being run on. You can do this dynamically using

String newline = System.getProperty("line.separator");

So you can later do

output.format(gR.toString() + newline);

Answer 3

You can try using \\n instead of \n