Package org.apache.avalon.framework.logger

Class NullLogger

  • All Implemented Interfaces:
    Logger
    public final class NullLogger
extends java.lang.Object
implements Logger
    The Null Logger class. This is useful for implementations where you need to provide a logger to a utility class, but do not want any output from it. It also helps when you have a utility that does not have a logger to supply.
    Version:
    $Id: NullLogger.java 30977 2004-07-30 03:57:54 -0500 (Fri, 30 Jul 2004) niclas $

    • Constructor Summary

      Constructors 
      Constructor Description
      NullLogger()
      Creates a new NullLogger.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void debug​(java.lang.String message)
      No-op.
      void debug​(java.lang.String message, java.lang.Throwable throwable)
      No-op.
      void error​(java.lang.String message)
      No-op.
      void error​(java.lang.String message, java.lang.Throwable throwable)
      No-op.
      void fatalError​(java.lang.String message)
      No-op.
      void fatalError​(java.lang.String message, java.lang.Throwable throwable)
      No-op.
      Logger getChildLogger​(java.lang.String name)
      Returns this NullLogger.
      void info​(java.lang.String message)
      No-op.
      void info​(java.lang.String message, java.lang.Throwable throwable)
      No-op.
      boolean isDebugEnabled()
      No-op.
      boolean isErrorEnabled()
      No-op.
      boolean isFatalErrorEnabled()
      No-op.
      boolean isInfoEnabled()
      No-op.
      boolean isWarnEnabled()
      No-op.
      void warn​(java.lang.String message)
      No-op.
      void warn​(java.lang.String message, java.lang.Throwable throwable)
      No-op.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • NullLogger

        public NullLogger()
        Creates a new NullLogger.

    • Method Detail

      • debug

        public void debug​(java.lang.String message)
        No-op.
        Specified by:
        debug in interface Logger
        Parameters:
        message - ignored

      • debug

        public void debug​(java.lang.String message,
                  java.lang.Throwable throwable)
        No-op.
        Specified by:
        debug in interface Logger
        Parameters:
        message - ignored
        throwable - ignored

      • isDebugEnabled

        public boolean isDebugEnabled()
        No-op.
        Specified by:
        isDebugEnabled in interface Logger
        Returns:
        false

      • info

        public void info​(java.lang.String message)
        No-op.
        Specified by:
        info in interface Logger
        Parameters:
        message - ignored

      • info

        public void info​(java.lang.String message,
                 java.lang.Throwable throwable)
        No-op.
        Specified by:
        info in interface Logger
        Parameters:
        message - ignored
        throwable - ignored

      • isInfoEnabled

        public boolean isInfoEnabled()
        No-op.
        Specified by:
        isInfoEnabled in interface Logger
        Returns:
        false

      • warn

        public void warn​(java.lang.String message)
        No-op.
        Specified by:
        warn in interface Logger
        Parameters:
        message - ignored

      • warn

        public void warn​(java.lang.String message,
                 java.lang.Throwable throwable)
        No-op.
        Specified by:
        warn in interface Logger
        Parameters:
        message - ignored
        throwable - ignored

      • isWarnEnabled

        public boolean isWarnEnabled()
        No-op.
        Specified by:
        isWarnEnabled in interface Logger
        Returns:
        false

      • error

        public void error​(java.lang.String message)
        No-op.
        Specified by:
        error in interface Logger
        Parameters:
        message - ignored

      • error

        public void error​(java.lang.String message,
                  java.lang.Throwable throwable)
        No-op.
        Specified by:
        error in interface Logger
        Parameters:
        message - ignored
        throwable - ignored

      • isErrorEnabled

        public boolean isErrorEnabled()
        No-op.
        Specified by:
        isErrorEnabled in interface Logger
        Returns:
        false

      • fatalError

        public void fatalError​(java.lang.String message)
        No-op.
        Specified by:
        fatalError in interface Logger
        Parameters:
        message - ignored

      • fatalError

        public void fatalError​(java.lang.String message,
                       java.lang.Throwable throwable)
        No-op.
        Specified by:
        fatalError in interface Logger
        Parameters:
        message - ignored
        throwable - ignored

      • isFatalErrorEnabled

        public boolean isFatalErrorEnabled()
        No-op.
        Specified by:
        isFatalErrorEnabled in interface Logger
        Returns:
        false

      • getChildLogger

        public Logger getChildLogger​(java.lang.String name)
        Returns this NullLogger.
        Specified by:
        getChildLogger in interface Logger
        Parameters:
        name - ignored
        Returns:
        this NullLogger