java - I am trying to log text from the console to a text file, and the text file isn't being created -

here code, wondering why isn't logging anything. when type console says:

hello

apr 08, 2013 10:13:47 pm java.util.logging.logmanager$rootlogger log

info: hello

however, nothing being logged files.

import java.io.ioexception; import java.util.scanner; import java.util.logging.filehandler; import java.util.logging.level; import java.util.logging.logger; import java.util.logging.simpleformatter;  public class main {     public static void main(string[] args) throws ioexception{          while (1 == 1) {             string text;             scanner in = new scanner(system.in);             text = in.nextline();             filehandler filetxt;             simpleformatter formattertxt;             logger logger = logger.getlogger("");             logger.setlevel(level.info);             filetxt = new filehandler("../loggedtext.txt");             formattertxt = new simpleformatter();             filetxt.setformatter(formattertxt);             logger.addhandler(filetxt);             logger.info(text);         }     } } 

your loop never terminates means jvm never performs proper shutdown. filehandler closed , synched if logging shutdown hook executes normally. possible data written never synched filesystem.

let's create corrected example can terminate normally:

public class main {      private static final logger logger = logger.getlogger(""); //prevent g.c.      public static void main(string[] args) throws ioexception {         logger.setlevel(level.info);         filehandler filetxt = new filehandler("../loggedtext.txt");         filetxt.setformatter(new simpleformatter());         logger.addhandler(filetxt);          system.out.println("root.level " + logger.getlevel());         system.out.println("filehandler.level " + filetxt.getlevel());         scanner in = new scanner(system.in);         string text;         while (true) {             system.out.print("enter text: ");             text = in.nextline();             if (text != null && !text.isempty()                      && !"quit".equalsignorecase(text)) {                 logger.info(text);             } else {                 system.out.println("done!");                 break;             }         }     } } 

will output following console:

root.level info filehandler.level enter text: hello nov 22, 2016 10:39:19 java.util.logging.logmanager$rootlogger log info: hello enter text: quit done! 

on filesystem loggedtext.txt containing:

nov 22, 2016 10:39:19 java.util.logging.logmanager$rootlogger log info: hello 

if can't terminate need explicitly call filehandler.close() on handlers create.

note: logged class name , method name incorrect known jdk-8152389.