Java tutorial
package xdoclet.modules.ojb; /* Copyright 2004-2005 The Apache Software Foundation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * Helper class for logging and message output. * * @author <a href="mailto:tomdz@users.sourceforge.net">Thomas Dudziak (tomdz@users.sourceforge.net)</a> */ public class LogHelper { /** * Logs the given debug message to stdout (if verbose is on) and to the log for the given class * (if the log level has been set to debug or higher). * * @param alsoStdout Whether to also put the message to stdout * @param clazz The clazz * @param posInfo The position info, e.g. method name * @param msg The message */ public static void debug(boolean alsoStdout, Class clazz, String posInfo, Object msg) { if (alsoStdout) { System.out.println(msg.toString()); } String name = clazz.getName(); if (posInfo != null) { name += "." + posInfo; } Log log = LogFactory.getLog(name); if (log.isDebugEnabled()) { log.debug(msg); } } /** * Logs the given warning to stdout and to the log for the given class * (if the log level has been set to warn or higher). * * @param alsoStdout Whether to also put the message to stdout * @param clazz The clazz * @param posInfo The position info, e.g. method name * @param msg The message */ public static void warn(boolean alsoStdout, Class clazz, String posInfo, Object msg) { if (alsoStdout) { System.out.println("Warning: " + msg.toString()); } String name = clazz.getName(); if (posInfo != null) { name += "." + posInfo; } Log log = LogFactory.getLog(name); if (log.isWarnEnabled()) { log.warn(msg); } } }