Uses of Class
org.apache.log4j.Category

Packages that use Category

Package	Description
org.apache.log4j	The main log4j package.
org.apache.log4j.config	Package used in getting/setting component properties.
org.apache.log4j.pattern	Provides classes implementing format specifiers in conversion patterns.
org.apache.log4j.spi	Contains part of the System Programming Interface (SPI) needed to extend log4j.

Uses of Category in org.apache.log4j

Subclasses of Category in org.apache.log4j

Modifier and Type	Class	Description
class	Logger	This is the central class in the log4j package.

Fields in org.apache.log4j declared as Category

Modifier and Type	Field	Description
protected Category	Category.parent	The parent of this category.

Methods in org.apache.log4j that return Category

Modifier and Type	Method	Description
static Category	Category.getInstance(java.lang.Class clazz)	Deprecated. Please make sure to use Logger.getLogger(Class) instead.
static Category	Category.getInstance(java.lang.String name)	Deprecated. Make sure to use Logger.getLogger(String) instead.
Category	Category.getParent()	Returns the parent of this category.
static Category	Category.getRoot()	Deprecated. Please use Logger.getRootLogger() instead.

Methods in org.apache.log4j with parameters of type Category

Modifier and Type	Method	Description
void	Hierarchy.emitNoAppenderWarning(Category cat)
void	Hierarchy.fireAddAppenderEvent(Category logger, Appender appender)

Uses of Category in org.apache.log4j.config

Methods in org.apache.log4j.config with parameters of type Category

Modifier and Type	Method	Description
protected void	PropertyPrinter.printOptions(java.io.PrintWriter out, Category cat)

Uses of Category in org.apache.log4j.pattern

Constructors in org.apache.log4j.pattern with parameters of type Category

Constructor	Description
LogEvent(java.lang.String fqnOfCategoryClass, Category logger, long timeStamp, Priority level, java.lang.Object message, java.lang.Throwable throwable)	Instantiate a LoggingEvent from the supplied parameters.
LogEvent(java.lang.String fqnOfCategoryClass, Category logger, Priority level, java.lang.Object message, java.lang.Throwable throwable)	Instantiate a LoggingEvent from the supplied parameters.

Uses of Category in org.apache.log4j.spi

Subclasses of Category in org.apache.log4j.spi

Modifier and Type	Class	Description
class	NOPLogger	No-operation implementation of Logger used by NOPLoggerRepository.
class	RootCategory	Deprecated. Replaced by RootLogger.
class	RootLogger	RootLogger sits at the top of the logger hierachy.

Methods in org.apache.log4j.spi that return Category

Modifier and Type	Method	Description
Category	LoggingEvent.getLogger()	Gets the logger of the event.

Methods in org.apache.log4j.spi with parameters of type Category

Modifier and Type	Method	Description
void	HierarchyEventListener.addAppenderEvent(Category cat, Appender appender)
void	LoggerRepository.emitNoAppenderWarning(Category cat)
void	NOPLoggerRepository.emitNoAppenderWarning(Category cat)
void	LoggerRepository.fireAddAppenderEvent(Category logger, Appender appender)
void	NOPLoggerRepository.fireAddAppenderEvent(Category logger, Appender appender)
void	HierarchyEventListener.removeAppenderEvent(Category cat, Appender appender)

Constructors in org.apache.log4j.spi with parameters of type Category

Constructor	Description
LoggingEvent(java.lang.String fqnOfCategoryClass, Category logger, long timeStamp, Level level, java.lang.Object message, java.lang.String threadName, ThrowableInformation throwable, java.lang.String ndc, LocationInfo info, java.util.Map properties)	Create new instance.
LoggingEvent(java.lang.String fqnOfCategoryClass, Category logger, long timeStamp, Priority level, java.lang.Object message, java.lang.Throwable throwable)	Instantiate a LoggingEvent from the supplied parameters.
LoggingEvent(java.lang.String fqnOfCategoryClass, Category logger, Priority level, java.lang.Object message, java.lang.Throwable throwable)	Instantiate a LoggingEvent from the supplied parameters.
ThrowableInformation(java.lang.Throwable throwable, Category category)	Create a new instance.