Examples of java.util.logging.FileHandler

java.util.logging.FileHandler
Simple file logging Handler.
The FileHandler can either write to a specified file, or it can write to a rotating set of files.
For a rotating set of files, as each file reaches a given size limit, it is closed, rotated out, and a new file opened. Successively older files are named by adding "0", "1", "2", etc into the base filename.
By default buffering is enabled in the IO libraries but each log record is flushed out when it is complete.
By default the XMLFormatter class is used for formatting.
Configuration: By default each FileHandler is initialized using the following LogManager configuration properties. If properties are not defined (or have invalid values) then the specified default values are used.
- java.util.logging.FileHandler.level specifies the default level for the Handler (defaults to Level.ALL).
- java.util.logging.FileHandler.filter specifies the name of a Filter class to use (defaults to no Filter).
- java.util.logging.FileHandler.formatter specifies the name of a Formatter class to use (defaults to java.util.logging.XMLFormatter)
- java.util.logging.FileHandler.encoding the name of the character set encoding to use (defaults to the default platform encoding).
- java.util.logging.FileHandler.limit specifies an approximate maximum amount to write (in bytes) to any one file. If this is zero, then there is no limit. (Defaults to no limit).
- java.util.logging.FileHandler.count specifies how many output files to cycle through (defaults to 1).
- java.util.logging.FileHandler.pattern specifies a pattern for generating the output file name. See below for details. (Defaults to "%h/java%u.log").
- java.util.logging.FileHandler.append specifies whether the FileHandler should append onto any existing files (defaults to false).
A pattern consists of a string that includes the following special components that will be replaced at runtime:
- "/" the local pathname separator
- "%t" the system temporary directory
- "%h" the value of the "user.home" system property
- "%g" the generation number to distinguish rotated logs
- "%u" a unique number to resolve conflicts
- "%%" translates to a single percent sign "%"
If no "%g" field has been specified and the file count is greater than one, then the generation number will be added to the end of the generated filename, after a dot.
Thus for example a pattern of "%t/java%g.log" with a count of 2 would typically cause log files to be written on Solaris to /var/tmp/java0.log and /var/tmp/java1.log whereas on Windows 95 they would be typically written to C:\TEMP\java0.log and C:\TEMP\java1.log
Generation numbers follow the sequence 0, 1, 2, etc.
Normally the "%u" unique field is set to 0. However, if the FileHandler tries to open the filename and finds the file is currently in use by another process it will increment the unique number field and try again. This will be repeated until FileHandler finds a file name that is not currently in use. If there is a conflict and no "%u" field has been specified, it will be added at the end of the filename after a dot. (This will be after any automatically added generation number.)
Thus if three processes were all trying to log to fred%u.%g.txt then they might end up using fred0.0.txt, fred1.0.txt, fred2.0.txt as the first file in their rotating sequences.
Note that the use of unique ids to avoid conflicts is only guaranteed to work reliably when using a local disk file system. @version 1.36, 04/07/06 @since 1.4

        System.setProperty("swing.aatext", "true");
        System.setProperty("awt.useSystemAAFontSettings", "lcd");
        UIManager.put("ToggleButton.margin", new Insets(0, 5, 0, 5));
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        // Logging configuration
        FileHandler handler = new FileHandler("%h/kanakata-%g.log", 1024000, 10, true);
        handler.setFormatter(new SimpleFormatter());
        Logger.getLogger("").addHandler(handler);
        // Application wiring
        Scheduler scheduler = new Scheduler(new Timer(true));
        KataFrame frame = new KataFrame(scheduler);
        KanaFlash flash = new KanaFlash(frame);

View Full Code Here

   *             if FileHandler cannot be created
   */
  private static void setUpLogging() throws RuntimeException {
    try {
      boolean append = true;
      FileHandler handler = new FileHandler(LOG_NAME, append);


      logger = Logger.getLogger(LOGGER_NAME);
      logger.addHandler(handler);
    } catch (IOException e) {
      String message = ErrorMessages.LOGGING_SETUP_FAILED_MESSAGE;

View Full Code Here

                int count =
                    configManager.getInt(EnvironmentParams.
           JE_LOGGING_FILE_COUNT);
                String logFilePattern = envHome + "/" + Tracer.INFO_FILES;


                fileHandler = new FileHandler(logFilePattern,
                                              limit, count, true);
                fileHandler.setFormatter(new SimpleFormatter()); 
                fileHandler.setLevel(level);
                logger.addHandler(fileHandler);
            }

View Full Code Here

        return;
      }
    }
    // add log file handler
    try {
      FileHandler newHandler = new FileHandler(filePath, 1000, 1, true);
      SimpleFormatter logFormatter = new SimpleFormatter();
      newHandler.setFormatter(logFormatter);
      Logger.getLogger("").addHandler(newHandler);
      if (logFileHandler != null) {
        Logger.getLogger("").removeHandler(logFileHandler);
      }
      logFileHandler = newHandler;

View Full Code Here

    if (singleton == null) {
      singleton = new LogMechanism();
      singleton.logger = Logger.getLogger("healthwatcher");
      singleton.IdLog = 0;
      try {
        FileHandler fh = new FileHandler(logFile);
        fh.setFormatter(new SimpleFormatter());
        singleton.logger.addHandler(fh);
      } catch (IOException e) {
      }


    }

View Full Code Here

        AnalystResult analystResult;
        Boolean result;
        int temp;
  
        Logger logger = Logger.getLogger("General");
        FileHandler fh = new FileHandler("c:\\temp\\poker\\general.log", true);
        logger.addHandler(fh);
        logger.setLevel(Level.ALL);
        SimpleFormatter formatter = new SimpleFormatter();
        fh.setFormatter(formatter);


        Integer[] handles;
        /*int MainHandle = 7080878;
        
        temp = pControl.getProcID(pData.getRoomSettings().getProcessName());

View Full Code Here

        logger.setLevel( Level.ALL );


        String logfileName = ConnectionManager.getModificationLogFileName( connection );
        try
        {
            FileHandler fileHandler = new FileHandler( logfileName, 100000, 10, true );
            fileHandlers.put( connection.getId(), fileHandler );
            fileHandler.setFormatter( new Formatter()
            {
                public String format( LogRecord record )
                {
                    return record.getMessage();
                }

View Full Code Here

        logger.setLevel( Level.ALL );


        String logfileName = ConnectionManager.getSearchLogFileName( connection );
        try
        {
            FileHandler fileHandler = new FileHandler( logfileName, 100000, 10, true );
            fileHandlers.put( connection.getId(), fileHandler );
            fileHandler.setFormatter( new Formatter()
            {
                public String format( LogRecord record )
                {
                    return record.getMessage();
                }

View Full Code Here

                    // could exit loop here, but keep on going for robustness (might be more than on handler)
                }
            }
            // set default logging
            Logger.getLogger("").setLevel(logLevel);
            Handler fileHandler = new FileHandler(logFilePath);
            fileHandler.setFormatter(DETAIL_FORMATTER);
            Logger.getLogger("").addHandler(fileHandler);
            logger.log(Level.INFO, "Logging Service configured");
        } catch (IOException ioe) {
            logger.log(Level.WARNING, "Could not set logging configuration", ioe);
        }

View Full Code Here

     * Get a log handler that should be used to write the log out to
     * the log file.
     * @return the handler to use
     */
    protected Handler getLogFileHandler() throws IOException {
        logFileHandler = new FileHandler(getLogFile().getCanonicalPath());
        logFileHandler.setLevel(Level.ALL);
        logFileHandler.setFormatter(new Formatter() {
            @Override
            public String format(LogRecord record) {
                return record.getMessage() + "\n";

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.util.logging.FileHandler

ag.ion.noa.test.OfficeBeanTest

ag.ion.noa.test.RemoteWriteTest

ass.Log

com.Acrobot.ChestShop.ChestShop

com.ateam.webstore.servlets.AteamContextListener

com.atomikos.diagnostics.RotatingFileConsole

com.cisco.oss.foundation.logging.FoundationLogger

com.palmergames.bukkit.towny.TownyLogger

com.sun.faban.driver.engine.MasterImpl

com.sun.faban.harness.engine.RunDaemon

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.