File Writer with String (java)

Question

i can't have newline in my text file with this code, what it's wrong with that?

try{
    oprint=new FileWriter("HighScores.txt",true);
} catch (IOException e1) {
    System.out.println("error");
}  
try{
    String stampa= "Player:  "+name+"  --- time "+ this.getDurata()+" s \n";
    oprint.write(stampa);
    oprint.close();
}catch(Exception e){
    System.out.println("error");
}

Well you definitely do have a line feed... are you saying you want one, or you don't? — Jon Skeet
– Jon Skeet, Commented Jun 25, 2012 at 11:37
Maybe you opened your file with an editor which expects to have a carriage return and linefeed (\r\n). — KARASZI István
– KARASZI István, Commented Jun 25, 2012 at 11:38
Note: Consider to use Automatic Resource Management if you're using Java SE 7. — Puce
– Puce, Commented Jun 25, 2012 at 11:41
What platform are you developing for? Try using %n instead of \n. — Jimbali
– Jimbali, Commented Jun 25, 2012 at 12:14

Tomer · Accepted Answer · 2012-07-20 12:09:12Z

3

Try using this:

public static String newline = System.getProperty("line.separator");

and then:

oprint.write("Player:  " + "x" + "  --- time " + "durata" + " s " + newline);

This is better as different OS's have different ways of writing new lines. Linux uses "\n", Mac uses "\r", and Windows uses "\r\n" for newline.

edited Jul 20, 2012 at 12:09

answered Jun 25, 2012 at 11:42

Tomer

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4 Comments

Marko Topolnik Over a year ago

There is actually a newLine method in Writer, but the sensible approach is to utilise a PrintWriter or a PrintStream. Then you'll have println to take care of this.

Nicolò Carpignoli Over a year ago

f*** i'm using the basic txt editor of windows. if i use wordpad newlines appear. thx to everybody

KARASZI István Over a year ago

Just a side-note but if he produces a file on a different platform than where he tries to read it, then it's a better ide to explicit write out the correct line separator, not the system preferred.

turbanoff Over a year ago

@ftom2 Windows uses \r\n, not Linux

Pshemo · Accepted Answer · 2012-06-25 11:49:08Z

0

Try maybe to wrap FileWriter in PrintWriter and use its println() method.

PrintWriter oprint;
try{
    oprint=new PrintWriter(new FileWriter("HighScores.txt",true));
    String stampa= "Player:  "+name+"  --- time "+ this.getDurata()+" s";
    oprint.println(stampa);//<- print with new line sign
    oprint.close();
}catch(Exception e){
    System.out.println("error");
}

answered Jun 25, 2012 at 11:49

Pshemo

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Comments

KARASZI István · Accepted Answer · 2012-10-06 10:55:29Z

0

Are you sure that your editor or viewer does not expect to have a carriage return (CR) at the end of the lines?

If so try with the following:

String stampa = "Player:  "+name+"  --- time "+ this.getDurata()+" s \r\n";

Or you could use the String.format:

String stampa = String.format("Player: %s  --- time %d s %n", name, this.getDurata());

From the format documentation:

'n' line separator The result is the platform-specific line separator

edited Oct 6, 2012 at 10:55

answered Jun 25, 2012 at 11:40

KARASZI István

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