Examples of java.util.logging.Handler

java.util.logging.Handler
A Handler object takes log messages from a Logger and exports them. It might for example, write them to a console or write them to a file, or send them to a network logging service, or forward them to an OS log, or whatever.
A Handler can be disabled by doing a setLevel(Level.OFF) and can be re-enabled by doing a setLevel with an appropriate level.
Handler classes typically use LogManager properties to set default values for the Handler's Filter, Formatter, and Level. See the specific documentation for each concrete Handler class. @version 1.21, 04/07/06 @since 1.4

        }
        throwable = record.getThrown();
        if (throwable != null && throwable instanceof OutOfMemoryError) {
            Handler[] handlers = Logger.getLogger("").getHandlers();
            for (int i = 0; i < handlers.length; i++) {
                Handler h = handlers[i];
                h.close();
            }
            NotifyDescriptor nd = new NotifyDescriptor.Message(MEMORY_ERROR, NotifyDescriptor.ERROR_MESSAGE);
            DialogDisplayer.getDefault().notify(nd);
            LifecycleManager.getDefault().exit();
        }

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  public static void installCustomFormatter() {
    // ASSURE TO HAVE THE ORIENT LOG FORMATTER TO THE CONSOLE EVEN IF NO CONFIGURATION FILE IS TAKEN
    final Logger log = Logger.getLogger("");
    if (log.getHandlers().length == 0) {
      // SET DEFAULT LOG FORMATTER
      Handler h = new ConsoleHandler();
      h.setFormatter(new OLogFormatter());
      log.addHandler(h);
    } else {
      for (Handler h : log.getHandlers()) {
        if (h instanceof ConsoleHandler && !h.getFormatter().getClass().equals(OLogFormatter.class))
          h.setFormatter(new OLogFormatter());
      }
    }
  }

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        lookup = ExplorerUtils.createLookup(manager, map);




        settingsFile = args.length > 0 ? new File(args[0]) : null;
        try {
            Logger.getLogger("").addHandler(new Handler() {
                {
                    setFormatter(new SimpleFormatter());
                }
                @Override public void publish(final LogRecord record) {
                    final String title;

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        lookup = ExplorerUtils.createLookup(manager, map);




        settingsFile = args.length > 0 ? new File(args[0]) : null;
        try {
            Logger.getLogger("").addHandler(new Handler() {
                {
                    setFormatter(new SimpleFormatter());
                }
                @Override public void publish(final LogRecord record) {
                    final String title;

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  public OLogManager() {
    // ASSURE TO HAVE THE ORIENT LOG FORMATTER TO THE CONSOLE EVEN IF NO CONFIGURATION FILE IS TAKEN
    Logger log = Logger.getLogger("");
    if (log.getHandlers().length == 0) {
      // SET DEFAULT LOG FORMATTER
      Handler h = new ConsoleHandler();
      h.setFormatter(new OLogFormatter());
      log.addHandler(h);
    } else {
      for (Handler h : log.getHandlers()) {
        if (h instanceof ConsoleHandler && !h.getFormatter().getClass().equals(OLogFormatter.class))
          h.setFormatter(new OLogFormatter());
      }
    }
  }

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  @Test
  public void testGetLogManager() {
    new File("target/log/karaf.log").delete();
    BootstrapLogManager.setProperties(getConfigProperties());
    Handler handler = BootstrapLogManager.getDefaultHandler();
    Assert.assertNotNull(handler);
    assertExists("target/log/karaf.log");
  }

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  @Test
  public void testGetLogManagerFromPaxLoggingConfig() {
    new File("target/test.log").delete();
    Properties configProps = getConfigProperties();
    BootstrapLogManager.setProperties(configProps, "src/test/resources/org.ops4j.pax.logging.cfg");
    Handler handler = BootstrapLogManager.getDefaultHandler();
    Assert.assertNotNull(handler);
    assertExists("target/test.log");
  }

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        TimeSpan timeSpan = new TimeSpan(timespanStr);


        if (argOptions.hasOption('v') || argOptions.hasOption("verbose")) {
            // Enable all the logging at the FINE level for the application
            Logger appRooLogger = Logger.getLogger("edu.ucla.sspace");
            Handler verboseHandler = new ConsoleHandler();
            verboseHandler.setLevel(Level.FINE);
            appRooLogger.addHandler(verboseHandler);
            appRooLogger.setLevel(Level.FINE);
            appRooLogger.setUseParentHandlers(false);
        }

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     * Sets the output level of the S-Space package according to the desired
     * level.
     */
    public static void setLevel(Level outputLevel) {
        Logger appRooLogger = Logger.getLogger("edu.ucla.sspace");
        Handler verboseHandler = new ConsoleHandler();
        verboseHandler.setLevel(outputLevel);
        appRooLogger.addHandler(verboseHandler);
        appRooLogger.setLevel(outputLevel);
        appRooLogger.setUseParentHandlers(false);
    }

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     * 
     * @since 2.0
     */
    public static void setLevel(String loggerNamespace, Level outputLevel) {
        Logger appRooLogger = Logger.getLogger(loggerNamespace);
        Handler verboseHandler = new ConsoleHandler();
        verboseHandler.setLevel(outputLevel);
        appRooLogger.addHandler(verboseHandler);
        appRooLogger.setLevel(outputLevel);
        appRooLogger.setUseParentHandlers(false);
    }

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