IO stream: line feed and append, io stream line feed

IO stream: line feed and append, io stream line feed

1 **. About line feed :**

// Text in notepad in windows is not wrapped in line // fw. write ("abfbfd \ nhahaha ");

In different systems, line breaks are different. However, we can use the following method to implement uniform line feed.

// Create a static constant private static final String LINE_SEPARATOR = System. getProperty ("line. separator"); fw. write ("abcde" + LINE_SEPARATOR + "Hahahaha ");

*

File writing extension *
Original Text of a text file:

// If true is added to the constructor, you can continue to write FileWriter fw = new FileWriter ("demo.txt", true); fw. write ("abcde" + LINE_SEPARATOR + "hahaha"); fw. write ("xixiixi ");