Uses of Class org.apache.log4j.Category (Apache Log4j 1.2.17 API)
Date: 2012-05-06

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## Uses of Class
org.apache.log4j.Category

Packages that use Category
org.apache.log4j | The main log4j package.
org.apache.log4j.config | Package used in getting/setting component properties.
org.apache.log4j.jmx | This package lets you manage log4j settings using JMX.
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
`class` | `Logger` This is the central class in the log4j package.

Fields in org.apache.log4j declared as Category
`protected Category` | `Category.parent` The parent of this category.

Methods in org.apache.log4j that return Category
`static Category` | `Category.getInstance(Class clazz)` Deprecated. Please make sure to use `Logger.getLogger(Class)` instead.
`static Category` | `Category.getInstance(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
`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
`protected void` | `PropertyPrinter.printOptions(PrintWriter out, Category cat)`

Uses of Category in org.apache.log4j.jmx

Methods in org.apache.log4j.jmx with parameters of type Category
`void` | `HierarchyDynamicMBean.addAppenderEvent(Category logger, Appender appender)`
`void` | `HierarchyDynamicMBean.removeAppenderEvent(Category cat, Appender appender)`

Uses of Category in org.apache.log4j.pattern

Constructors in org.apache.log4j.pattern with parameters of type Category
`LogEvent(String fqnOfCategoryClass, Category logger, long timeStamp, Priority level, Object message, Throwable throwable)` Instantiate a LoggingEvent from the supplied parameters.
`LogEvent(String fqnOfCategoryClass, Category logger, Priority level, Object message, 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
`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
`Category` | `LoggingEvent.getLogger()` Gets the logger of the event.

Methods in org.apache.log4j.spi with parameters of type Category
`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
`LoggingEvent(String fqnOfCategoryClass, Category logger, long timeStamp, Level level, Object message, String threadName, ThrowableInformation throwable, String ndc, LocationInfo info, Map properties)` Create new instance.
`LoggingEvent(String fqnOfCategoryClass, Category logger, long timeStamp, Priority level, Object message, Throwable throwable)` Instantiate a LoggingEvent from the supplied parameters.
`LoggingEvent(String fqnOfCategoryClass, Category logger, Priority level, Object message, Throwable throwable)` Instantiate a LoggingEvent from the supplied parameters.
`ThrowableInformation(Throwable throwable, Category category)` Create a new instance.

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