Here is an example where I read lines from a file as strings to make a whole file as an array of strings:
String[] ArrayOfStrings = (new Scanner( new File("log.txt") ).useDelimiter("\\A").next()).split("[\\r\\n]+");
I there any similar way to do the write back into the file:
something_that_writes_into_file(ArrayOfStrings)?
I know about PrintWriter, Buffer and other stuffs using loops.
My question is specifically about something which is more compact, say - a one line solution?
Using Apache Commons IO and Apache StringUtils:
FileUtils.writeStringToFile(new File(theFile), StringUtils.join(theArray, delimiter));
This is how it can be done.
for(int i = 0; i < observation.length; i++)
{
try(BufferedWriter bw = new BufferedWriter(new FileWriter("birdobservations.txt", true)))
{
String s;
s = observation[i];
bw.write(s);
bw.flush();
}
catch(IOException ex)
{
//
}
}
Same question is discussed before, Please refer below link for the same. Writing a string array to file using Java - separate lines
In Java8 one might use Streams:
File file = new File("log.txt");
FileWriter out = new FileWriter(file);
// reading
String[] arrayOfStrings = (new Scanner(file).useDelimiter("\\A").next()).split("[\\r\\n]+");
// writing
Stream.of(arrayOfStrings).forEach(e -> {try {out.append(e);} catch (IOException e1) {e1.printStackTrace();}});
Of couse this is very bad style and I only wrote it that way, because you requested a "1-liner". Actually it would be done like so:
Stream.of(arrayOfStrings).forEach(e -> {
try {
out.append(e);
} catch (IOException e1) {
e1.printStackTrace();
}
});
