Trying to appending a text in a new line to an existing file in Java?

Question

How to append text to an existing file in Java?

I am using the method mentioned in the solution and i am taking user input. But the text is appending with the last word. is there any way to add an new line there?

  Scanner sc= new Scanner(System.in); 
        System.out.print("Enter a string: ");  
        String str= sc.nextLine(); 
        try {
            Files.write(Paths.get("C:\\Users\\souravpal\\Documents\\Bandicam\\buddy.txt"), str.getBytes(), StandardOpenOption.APPEND);
        }catch (IOException e) {
            //exception handling left as an exercise for the reader
        }

score 0 · Answer 1 · edited Nov 21 '20 at 08:32

0

You must use the new line character \n in your str variable if you want to move to the next line.

String str = "\n" + sc.nextLine();

You also should put it before the input becouse you will append it at the end of the file.

edited Nov 21 '20 at 08:32

Krzysztof Witkowski

155
14

answered Nov 21 '20 at 08:13

evgzabozhan

140
1
11

You should avoid specific new line separators such as "\n" or "\r\n" that depends on the OS. – Faizan Burney Nov 21 '20 at 08:34
Interesting. I was using \n on all OS and this is working. Why do you think it's working only on windows? – evgzabozhan Nov 21 '20 at 08:39
Check this out: https://www.baeldung.com/java-string-newline – Faizan Burney Nov 21 '20 at 08:45

Faizan Burney · Answer 2 · 2020-11-21T14:33:28.050

0

use the System.lineSeparator() constant that applies at runtime and compatible with all OS.

Files.write(Paths.get("C:\\Users\\souravpal\\Documents\\Bandicam\\buddy.txt"),
                    (System.lineSeparator() + str).getBytes(),StandardOpenOption.APPEND);

edited Nov 21 '20 at 14:33

answered Nov 21 '20 at 08:32

Faizan Burney

141
7

Trying to appending a text in a new line to an existing file in Java?

2 Answers2