CODEWITHSUNDEEP
javaio
SakshamInABox
SakshamInABox

Reputation: 79

How To Write Next Line To File

I have tried using writer.newLine() however it says method not found. Does anyone know how I can write a new line after each iteration?

 public static void keepLetters() throws IOException {
        BufferedReader sourceReader = new BufferedReader(new FileReader("input.txt"));

        for (String line = sourceReader.readLine(); line != null; line = sourceReader.readLine()) {
            String updatedLine = line.replaceAll("[^A-Za-z]", "");
            System.out.println(updatedLine);

            try (Writer writer = new BufferedWriter(new OutputStreamWriter(
                                 new FileOutputStream("output.txt"), "UTF-8"))) {
                    writer.write(updatedLine);
            }
        }

    }

I wrote writer.nextLine() after writer.write(updatedLine);

Thank you

Upvotes: 1

Views: 5702

Answers (2)

sorifiend
sorifiend

Reputation: 6307

The correct method is newLine(), but you need to call it on a BufferedWriter, not a Writer.

Like so:

try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
                                 new FileOutputStream("output.txt", true), "UTF-8"))) {
                                 writer.write(updatedLine);
                                 writer.newLine();
            }

Note this part try (BufferedWriter writer

Update for comment

BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output.txt"), "UTF-8"));

for (int i = 0; i < linesToWrite; i++){
    writer.write(updatedLine);
    writer.newLine();
}
writer.close();

Upvotes: 3

user1242321
user1242321

Reputation: 1696

You can simple do 

writer.write(updatedLine + "\n");

which will ensure a newline is written after every updatedLine.

EDIT:

The writer is being reinitiated to the same file output every iteration of the loop. It should be initialised once before the loop and closed later on to resolve your issue.

Upvotes: 0

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