Examples of org.apache.log4j.Logger.warn()

org.apache.log4j.Logger.warn()
Log a message with the WARN level with message formatting done according to the messagePattern and the arguments arg1 and arg2.
This form avoids superflous parameter construction. Whenever possible, you should use this form instead of constructing the message parameter using string concatenation. @param messagePattern The message pattern which will be parsed and formatted @param arg1 The first argument to replace the first formatting element @param arg2 The second argument to replace the second formatting element @since 1.3


        Logger warnLog, infoLog, debugLog;


        warnLog = Logger.getLogger("MAIN.WARN");
        warnLog.setLevel(Level.WARN);
        warnLog.warn("Warn Message");
        warnLog.info("Info Message");
        warnLog.debug("Debug Message");


        infoLog = Logger.getLogger("MAIN.INFO");
        infoLog.setLevel(Level.INFO);

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        temp.debug(szoveg);
        break;
      }
      case WARN: {
        JOptionPane.showMessageDialog(null, szoveg, "Hiba t�rt�nt", JOptionPane.WARNING_MESSAGE);
        temp.warn(szoveg);
        break;
      }
      case ERROR: {
        JOptionPane.showMessageDialog(null, szoveg, "Hiba t�rt�nt", JOptionPane.ERROR_MESSAGE);
        temp.error(szoveg);

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      boolean result = fromFile.renameTo(toFile);


      if (!result) {
        Logger logger = getLogger();
        logger.warn("Failed to rename file [{}] to [{}].", fromFile, toFile);
        logger.warn("Attemting to rename by copying.");
        renameByCopying(from, to);
      }
    } else {
      throw new RolloverFailure("File [" + from + "] does not exist.");

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      boolean result = fromFile.renameTo(toFile);


      if (!result) {
        Logger logger = getLogger();
        logger.warn("Failed to rename file [{}] to [{}].", fromFile, toFile);
        logger.warn("Attemting to rename by copying.");
        renameByCopying(from, to);
      }
    } else {
      throw new RolloverFailure("File [" + from + "] does not exist.");
    }

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    Logger logger = LogManager.getLogger(Log4jEntityResolver.class);


    logger.debug(
      "Log4jEntityResolver.resolveEntity({}, {}) called", publicId, systemId);
    if (systemId.endsWith("log4j.dtd")) {
      logger.warn("The 'log4j.dtd' is no longer used nor needed.");
      logger.warn("See {}#log4j_dtd for more details.", Constants.CODES_HREF);
      Class clazz = getClass();
      InputStream in =
        clazz.getResourceAsStream("/org/apache/log4j/xml/log4j.dtd");

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    logger.debug(
      "Log4jEntityResolver.resolveEntity({}, {}) called", publicId, systemId);
    if (systemId.endsWith("log4j.dtd")) {
      logger.warn("The 'log4j.dtd' is no longer used nor needed.");
      logger.warn("See {}#log4j_dtd for more details.", Constants.CODES_HREF);
      Class clazz = getClass();
      InputStream in =
        clazz.getResourceAsStream("/org/apache/log4j/xml/log4j.dtd");


      if (in == null) {

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        switch (level) {
            case Level.ERROR:
                log.error(message, exceptionMessage != null ? new RemoteException(exceptionMessage) : null);
                break;
            case Level.WARN:
                log.warn(message, exceptionMessage != null ? new RemoteException(exceptionMessage) : null);
                break;
            case Level.INFO:
                log.info(message, exceptionMessage != null ? new RemoteException(exceptionMessage) : null);
                break;
            case Level.DEBUG:

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                                    final ComponentAdapter<T> componentAdapter,
                                    final Constructor<T> constructor,
                                    final Exception cause) {
        Logger logger = getLogger(constructor);
        if (logger.isEnabledFor(Priority.WARN)) {
            logger.warn(format(ComponentMonitorHelper.INSTANTIATION_FAILED, ctorToString(constructor), cause.getMessage()), cause);
        }
        delegate.instantiationFailed(container, componentAdapter, constructor, cause);
    }


    /** {@inheritDoc} **/

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    /** {@inheritDoc} **/
    public void invocationFailed(final Member member, final Object instance, final Exception cause) {
        Logger logger = getLogger(member);
        if (logger.isEnabledFor(Priority.WARN)) {
            logger.warn(format(ComponentMonitorHelper.INVOCATION_FAILED, memberToString(member), instance, cause.getMessage()), cause);
        }
        delegate.invocationFailed(member, instance, cause);
    }


    /** {@inheritDoc} **/

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                                          final ComponentAdapter<?> componentAdapter, final Method method,
                                          final Object instance,
                                          final RuntimeException cause) {
        Logger logger = getLogger(method);
        if (logger.isEnabledFor(Priority.WARN)) {
            logger.warn(format(ComponentMonitorHelper.LIFECYCLE_INVOCATION_FAILED, methodToString(method), instance, cause.getMessage()), cause);
        }
        delegate.lifecycleInvocationFailed(container, componentAdapter, method, instance, cause);
    }


    /** {@inheritDoc} **/

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