Java in a Nutshell, 5th Edition

Name

LogManager

Synopsis

As its name implies, this class is the manager for the java.util.logging API. It has three specific purposes: (1) to read a logging configuration file and create the default Handler objects specified in that file; (2) to manage a set of Logger objects, arranging them into a tree based on their heirarchical names; and (3) to create and manage the unnamed Logger object that serves as the parent or ancestor of every other Logger. This class handles the important behind-the-scenes details that makes the Logging API work. Typical applications can make use of logging without ever having to use this class explicitly. Although its API is not commonly used by application programmers, it is still useful to understand the LogManager class, so it is described in detail here.

There is a single global instance of LogManager, which is obtained with the static getLogManager( ) method. By default, this global log manager object is an instance of the LogManager class itself. You may instead instantiate an instance of a subclass of LogManager by specifing the full class name of the subclass as the value of the system property java.util.logging.manager.

One of the primary purposes of the LogManager class is to read a java.util.Properties file that specifies the default logging configuration for the system. By default, this file is named logging.properties and is stored in the jre/lib directory of the Java installation. If you want to run a Java application using a different logging ...