java java中随机访问文件中的新行
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new line in Random Access File in java
提问by aceBox
Whenever using the 'writeBytes' method of RandomAccessFilein java,it writes the text in the same line in the file. How can I get to a new line with RandomAccessFileonly? (No BufferedReader).
每当使用RandomAccessFilejava 中的 'writeBytes' 方法时，它都会将文本写入文件的同一行中。我怎样才能到达一个新的线路RandomAccessFile？（否BufferedReader）。
回答by Marc Baumbach
You can write a line separator. In order to get the correct line separator for the currently running operating system, you'll have to look for the line.separatorproperty. Something along these lines:
您可以编写行分隔符。为了为当前运行的操作系统获得正确的行分隔符，您必须查找该line.separator属性。沿着这些路线的东西：
randomAccessFile.writeBytes(System.getProperty("line.separator"));
回答by Hemant Kumar
Try this:
试试这个：
RandomAccessFile file = new RandomAccessFile("e:\demo.txt","rw");
String originalString = "First line \nSeconf line \n";
String updatedString = originalString.replace("\n","\r\n");
file.writeBytes(updatedString);
回答by Vihaan Verma
new line character has an ASCII value of 10 . You can store this value in in a Byte and then use the "writeBytes" which will result in a new line.
换行符的 ASCII 值为 10 。您可以将此值存储在一个字节中，然后使用“writeBytes”，这将产生一个新行。
回答by Maker
String data = "New Line";
RandomAccessFile raf = new RandomAccessFile(myFile);
raf.writeBytes("\r\n" + data);
This will add a new line (windows style / CRLF) before the "text".
这将在“文本”之前添加一个新行（Windows 样式/CRLF）。
回答by Matt Clark
System.getProperty("line.separator");
Try writing a new line to the file before anything else, as it will start writing where your last write left off.
尝试在其他任何事情之前向文件写入一个新行，因为它会从上次写入停止的地方开始写入。
