CODEWITHSUNDEEP
javafile-ioio
lau lazar
lau lazar

Reputation: 3

Writing in files without overflow

I have the following code:

FileWriter filewriter = null;
try { filewriter = new FileWriter("outUser.txt", true); } 
catch (IOException e1) { e1.printStackTrace(); }

try {
    filewriter.write(s1+"\n");
    filewriter.flush();
}
catch (IOException e1) { e1.printStackTrace(); }

Its supposed to write on outUser file the s1 string and a newline. It only writes s1, the newline is not written. I also tried with a new string that equals \n and append it to s1 when written but still didn't work. Do any of you have some answers for me?

Upvotes: 0

Views: 81

Answers (5)

Anirudha
Anirudha

Reputation: 32787

Different OS have different ways to represent newlines.

For Example,\n is used in UNIX but \r\n is used in Windows.

This answers why windows uses \r

You can use System.lineSeparator() which returns the system-dependent line separator string.

Upvotes: 2

anshulkatta
anshulkatta

Reputation: 2064

Do like this

FileWriter filewriter = null;

         try {
             filewriter = new FileWriter("c:\\outUser.txt", true);
          } catch (IOException e1) {
             e1.printStackTrace();
          }
          try {
              filewriter.write("hi"+System.getProperty("line.separator"));
              filewriter.write("asd");
             filewriter.flush();
             }
          catch (IOException e1) {
             e1.printStackTrace();
          }

Use Line Separator Property to print nextline to File .

Upvotes: 0

Pavan Kumar K
Pavan Kumar K

Reputation: 1376

The following should work

FileWriter filewriter = null;
try {
                     filewriter = new FileWriter("outUser.txt", true);
                     BufferedWriter buffWriter = new BufferedWriter(fileWriter);  
                  } catch (IOException e1) {
                     e1.printStackTrace();
                  }
                  try {
                      buffwriter.write(s1+"\n");
                      buffWriter.newLine();
                     buffwriter.flush();
                     }
                  catch (IOException e1) {
                     e1.printStackTrace();
                  }

Upvotes: 0

sschrass
sschrass

Reputation: 7166

Open your outUser.txt with an text editor like notepad++ and enable the 'non-printable'-chars. You should see an CR/LF, which is the \n.

Upvotes: 0

zeller
zeller

Reputation: 4974

The line feed should be there, but keep in mind that different OS-es have different new line characters.
If you're out of luck you can always try BufferedWriter.newLine().

Upvotes: 2

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