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java – Carriage returns/line breaks with \n in strings in Android

Posted by: admin June 15, 2020 Leave a comment

Questions:

I’m writing an Android app where I’m writing a file to disk with one data value per line. Later, such files can be read back into the app, and this simple data format is deserialized back into an array. At the moment, I’m delineating data values/lines in the serialization and deserialization code with \n.

How does Android handle carriage returns and such line breaks? Can I use \n safely in this context?

How to&Answers:

Its better to use

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

Answer:

Yes, the line separator under Windows is \r\n (CR+LF), on Mac \r and on Linux (Android) \n. Java has a clever reader which returns the line without separator, and a println which uses the platform setting System.getProperty("line.separator").

Answer:

1 – like the tow people before me i say, System.getProperty("line.separator") is your friend.

2 – As android is based on a linux kernel it is most likely that the line.separator property is in fact \n

3 – when reading or writing your files use buffered reader and writer an respectively their methods readLine and newLine. You should not have any trouble dealing with input/output files from/for other platforms.