string - java (matcher.group()) - write to file -

i have code finds coordinates between specific words. now, output console works perfect, id output matches found file current code:

public class filetostring {   public static void main(string[] args) throws filenotfoundexception, ioexception {     string s = new scanner(new file("input.txt")).usedelimiter("\\z").next(); //system.out.println(content);       pattern patt;     patt = pattern.compile("\\bworld\\b|\\bsolid\\b|.(-?\\d+\\s-?\\d+\\s-?\\d+\\)\\s\\     (-?\\d+\\s-?\\d+\\s-?\\d+\\)\\s\\(-?\\d+\\s-?\\d+\\s-?\\d+).");     matcher matcher = patt.matcher(s); while(matcher.find()) //system.out.println(matcher.group());   try (filewriter file2 = new filewriter("output.txt");          bufferedwriter bf = new bufferedwriter(file2)) {         bf.write(matcher.group()); }          system.out.println("done");  }          } 

output should

world

solid

(3245) (2334) (-234)

.

.

.

.

.

.

(457) (2) (2323)

instead, when output file, first coords appear:

(3245) (2334) (-234)

as written, opening same file through each pass through while loop. each filewriter/bufferedwriter combo write 1 line of output. none ever closed. when released, it's going guessing game 1 flushed & closed last, overwriting other outputs.

try moving while loop inside try, after bufferedwriter created. , close bf when done (in finally block nice).