CODEWITHSUNDEEP
javafile-ioapache-commons
Chris Schmitz
Chris Schmitz

Reputation: 658

Writing to a new line in a file using Commons IO?

I know that 

FileUtils.writeStringToFile(myfile.txt, "my string", true);

adds 'my string' to the end of myfile.txt, so it looks like

previous stringsmy string

But is there any way to use Commons IO to write a string to a new line in a file, to change the file to

previous strings
my string

Upvotes: 7

Views: 19772

Answers (3)

SanSolo
SanSolo

Reputation: 2373

declare 

final String newLine = System.getProperty("line.separator");

and in call, FileUtils.writeStringToFile(myfile.txt, yourVariable+newLine, true);

i use a variable , so this was more useful for me

Upvotes: 4

Maxim Shoustin
Maxim Shoustin

Reputation: 77910

In addition to above mentioned response;

If you doesn't have huge file you can write:

List<String> lines = Files.readAllLines(Paths.get(myfile.txt), StandardCharsets.UTF_8);
lines.add("my string");
Files.write(Paths.get(myfile.txt), lines, StandardCharsets.UTF_8);

Generally its good to add new row in the middle of file

List<String> lines = Files.readAllLines(Paths.get(myfile.txt)), StandardCharsets.UTF_8);
lines.add(6, "my string"); // for example
Files.write(Paths.get(myfile.txt), lines, StandardCharsets.UTF_8);

Upvotes: 2

user987339
user987339

Reputation: 10717

Java use \n to mark new line so try with:

FileUtils.writeStringToFile(myfile.txt, "\nmy string", true);

Upvotes: 8

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