The difference between/R and/N in Java and/r/n

Scene: In the learning of spring combat, as well as the work of writing files, often encountered in the Java line-wrapping problem, found that some books on the introduction and actual use is not consistent. It's only clear now!

By comparing the text, the assertion should return the correct result! But it backfired, eventually changing the line to \ r \ n solve the problem.

1 Determination of various newline characters

/R called Enter Carriage REturn
/N Call New line new Line
But it will cause a newline.

Use System.getproperty ("Line.separator") to get the current OS line break

Below is the result of the view under Win7:

So when you use line breaks, combine the specific operating system.

The systems should be:
/R Mac
/n Unix/linux
/r/n Windows

(RPM) The difference between/R and/N in Java and/r/n