What are the differences between char literals n and r in Java

Question

In Java  the newline and carriage return characters are both seem to be showing same effect   What are the actual differences between char literals  n and  r in Java     Note that the above asks about the  n character  not the newLine   function on BufferedWriter  and so this other question isn t relevant

User · Answer

When you print a string in console Eclipse   n  r and  r n have the same effect all of them will give you a new line but  n r also  n n  r r  will give you two new lines when you write a string to a file only  r n can give you a new line

User · Answer

The difference is not Java-specific  but platform specific  Historically UNIX-like OSes have used  n as newline character  some other deprecated OSes have used  r and Windows OSes have employed  r n

User · Answer

n is a line feed  LF  character  character code 10   r is a carriage return  CR  character  character code 13  What they do differs from system to system  On Windows  for instance  lines in text files are terminated using CR followed immediately by LF  e g   CRLF   On Unix systems and their derivatives  only LF is used   Macs prior to Mac OS X used CR  but Mac OS X is a  nix derivative and so uses LF    In the old days  LF literally did just a line feed on printers  moving down one line without moving where you are horizonally on the page   and CR similarly moved back to the beginning of the line without moving the paper up  hence some systems  like Windows  sending CR  return to the left-hand side  and LF  and feed the paper up    Because of all this confusion  some output targets will accept multiple line break sequences  so you could see the same effect from either character depending on what you re outputting to

User · Answer

It actually depends on what is being used to print the result  Usually  the result is the same  just as you say -   Historically carriage return is supposed to do about what the home button does  return the caret to the start of the line    n is supposed to give you a new line but not move the caret   If you think about old printers  you re pretty much thinking how the original authors of the character sets were thinking  It s a different operation moving the paper feeder and moving the caret  These two characters express that difference

User · Answer

It depends on which Platform you work  To get the correct result use -  System getProperty  line separator

User · Answer

The above answers provided are perfect  The LF  n   CR  r  and CRLF  r n  characters are platform dependent  However  the interpretation for these characters is not only defined by the platforms but also the console that you are using  In Intellij console  Windows   this  r character in this statement System out print  quot Happ ry quot    produces the output y  But  if you use the terminal  Windows   you will get yapp as the output

User · Answer

n is for unix   r is for mac  before OS X   r n is for windows format  you can also take System getProperty  line separator    it will give you the appropriate to your OS

User · Answer

On the command line   r will move the cursor back to the beginning of the current line  To see the difference you must run your code from a command prompt  Eclipse s console show similar output for both the expression  For complete list of escape sequences  click here https   docs oracle com javase specs jls se8 html jls-3 html jls-3 10 6

[java] What are the differences between char literals '\n' and '\r' in Java?

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