Groovy write to file newline

Question

I created a small function that simply writes text to a file  but I am having issues making it write each piece of information to a new line  Can someone explain why it puts everything on the same line    Here is my function    public void writeToFile def directory  def fileName  def extension  def infoList        File file   new File   directory  fileName extension        infoList each           file  lt  lt      it  n             The simple code I m testing it with is something like this   def directory    C    def folderName    testFolder  def c  def txtFileInfo       String a    Today is a new day  String b    Tomorrow is the future  String d    Yesterday is the past   txtFileInfo  lt  lt  a txtFileInfo  lt  lt  b txtFileInfo  lt  lt  d  c   createFolder directory  folderName    this simply creates a folder to drop the txt file in  writeToFile c   garbage     txt   txtFileInfo    The above creates a text file in that folder and the contents of the text file look like this    Today is a new dayTomorrow is the futureYesterday is the past   As you can see  the text is all bunched together instead of separated on a new line per text  I assume it has something to do with how I am adding it into my list

User · Answer

Comment for ID 14  It s for me rather easier to write   out append it   instead of  out println it   println did on my machine only write the first file of the ArrayList  with append I get the whole List written into the file   Kindly anyway for the quick-and-dirty-solution

User · Answer

It looks to me  like you re working in windows in which case a new line character in not simply  n but rather  r n  You can always get the correct new line character through  System getProperty  line separator   for example

User · Answer

As  Steven points out  a better way would be   public void writeToFile def directory  def fileName  def extension  def infoList      new File   directory  fileName extension   withWriter   out - gt      infoList each         out println it               As this handles the line separator for you  and handles closing the writer as well   and doesn t open and close the file each time you write a line  which could be slow in your original version

User · Answer

I came across this question and inspired by other contributors  I need to append some content to a file once per line  Here is what I did   class Doh      def ln   System getProperty  line separator      File file   assume it s initialized      void append String content           file  lt  lt    content ln           Pretty neat I think

User · Answer

Might be cleaner to use PrintWriter and its method println  Just make sure you close the writer when you re done

[file-io] Groovy write to file (newline)

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