protected DefaultLog() 
{
             
        // nothing required
}

Creates a new log.

 public synchronized  void addTarget(LogTarget target) 
{
      super.addTarget(target);
      // as soon as there is a real log target added, we do no longer need
      // the default logging. This was only installed to be able to send messages
      // if the deepest basic logging failed.
      if (target != DEFAULT_LOG_TARGET) {
          removeTarget(DEFAULT_LOG_TARGET);
      }
}

Adds a log target to this facility. Log targets get informed, via the LogTarget interface, whenever a message is logged with this class.

 public static DefaultLog getDefaultLog() 
{
        return defaultLogInstance;
}

Returns the default log.

 public  void init() 
{
        defaultLogInstance = new DefaultLog();
        defaultLogInstance.addTarget(DEFAULT_LOG_TARGET);
        try {
            // check the system property. This is the developers backdoor to activate
            // debug output as soon as possible.
          final String property = System.getProperty("org.jfree.DebugDefault", "false");
          if (Boolean.valueOf(property).booleanValue()) {
              defaultLogInstance.setDebuglevel(LogTarget.DEBUG);
          }
          else {
              defaultLogInstance.setDebuglevel(LogTarget.WARN);
          }
        }
        catch (SecurityException se) {
            defaultLogInstance.setDebuglevel(LogTarget.WARN);
        }
        removeTarget(DEFAULT_LOG_TARGET);
        final String logLevel = LogConfiguration.getLogLevel();
        if (logLevel.equalsIgnoreCase("error")) {
            setDebuglevel(LogTarget.ERROR);
        }
        else if (logLevel.equalsIgnoreCase("warn")) {
            setDebuglevel(LogTarget.WARN);
        }
        else if (logLevel.equalsIgnoreCase("info")) {
            setDebuglevel(LogTarget.INFO);
        }
        else if (logLevel.equalsIgnoreCase("debug")) {
            setDebuglevel(LogTarget.DEBUG);
        }
}

Initializes the log system after the log module was loaded and a log target was defined. This is the second step of the log initialisation.

 public static  void installDefaultLog() 
{
      Log.defineLog(defaultLogInstance);
}

Makes this implementation the default instance.