java.util.logging

Class LogManager

java.lang.Object

java.util.logging.LogManager

public class LogManager
extends Object

There is one LogManager object in an application. It maintains properties about loggers and manages the hierarchy of loggers.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LogManager() Protected constructor.

Method Summary

Modifier and Type	Method and Description
boolean	addLogger(Logger logger) Add a named logger.
Logger	getLogger(String name) Find a named logger.
Enumeration<String>	getLoggerNames() Get an enumeration of known logger names.
static LogManager	getLogManager() Returns the LogManager object.

Methods inherited from class java.lang.Object

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

Constructor Detail

LogManager

protected LogManager()

Protected constructor. There must be only one LogManager in an application.

Method Detail

addLogger

public boolean addLogger(Logger logger)

Add a named logger. This method does nothing if the logger had already been added.

The factory methods from Logger call this method for each Logger they created.

Parameters:

logger - the logger to register

Returns:

true if the logger was registered, false if a logger with the same already exists

Throws:

NullPointerException - if the logger name is null

getLogger

@Nullable
public Logger getLogger(String name)

Find a named logger.

Parameters:

name - name of the logger

Returns:

the matching logger or null if there is no match

getLoggerNames

public Enumeration<String> getLoggerNames()

Get an enumeration of known logger names.

Returns:

an enumeration of strings

getLogManager

public static LogManager getLogManager()

Returns the LogManager object.

Returns:

the LogManager