org.apache.log4j

Class Level

java.lang.Object

org.apache.log4j.Priority

org.apache.log4j.Level

All Implemented Interfaces:

Serializable

public class Level
extends Priority
implements Serializable

Defines the minimum set of levels recognized by the system, that is OFF, FATAL, ERROR, WARN, INFO, DEBUG and ALL.

The Level class may be subclassed to define a larger level set.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Level	ALL The ALL has the lowest possible rank and is intended to turn on all logging.
static Level	DEBUG The DEBUG Level designates fine-grained informational events that are most useful to debug an application.
static Level	ERROR The ERROR level designates error events that might still allow the application to continue running.
static Level	FATAL The FATAL level designates very severe error events that will presumably lead the application to abort.
static Level	INFO The INFO level designates informational messages that highlight the progress of the application at coarse-grained level.
static Level	OFF The OFF has the highest possible rank and is intended to turn off logging.
static Level	TRACE The TRACE Level designates finer-grained informational events than the DEBUG level.
static int	TRACE_INT TRACE level integer value.
static Level	WARN The WARN level designates potentially harmful situations.

Fields inherited from class org.apache.log4j.Priority

ALL_INT, DEBUG_INT, ERROR_INT, FATAL_INT, INFO_INT, OFF_INT, WARN_INT

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Level(int level, String levelStr, int syslogEquivalent) Instantiate a Level object.

Method Summary

Modifier and Type	Method and Description
protected Object	readResolve() Resolved deserialized level to one of the stock instances.
static Level	toLevel(int val) Convert an integer passed as argument to a level.
static Level	toLevel(int val, Level defaultLevel) Convert an integer passed as argument to a level.
static Level	toLevel(String sArg) Convert the string passed as argument to a level.
static Level	toLevel(String sArg, Level defaultLevel) Convert the string passed as argument to a level.

Methods inherited from class org.apache.log4j.Priority

equals, getAllPossiblePriorities, getSyslogEquivalent, hashCode, isGreaterOrEqual, toInt, toPriority, toPriority, toPriority, toPriority, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

TRACE_INT

public static final int TRACE_INT

TRACE level integer value.

Since:

1.2.12

See Also:

Constant Field Values

OFF

public static final Level OFF

The OFF has the highest possible rank and is intended to turn off logging.

FATAL

public static final Level FATAL

The FATAL level designates very severe error events that will presumably lead the application to abort.

ERROR

public static final Level ERROR

The ERROR level designates error events that might still allow the application to continue running.

WARN

public static final Level WARN

The WARN level designates potentially harmful situations.

INFO

public static final Level INFO

The INFO level designates informational messages that highlight the progress of the application at coarse-grained level.

DEBUG

public static final Level DEBUG

The DEBUG Level designates fine-grained informational events that are most useful to debug an application.

TRACE

public static final Level TRACE

The TRACE Level designates finer-grained informational events than the DEBUG level.

ALL

public static final Level ALL

The ALL has the lowest possible rank and is intended to turn on all logging.

Constructor Detail

Level

protected Level(int level,
                String levelStr,
                int syslogEquivalent)

Instantiate a Level object.

Parameters:

level - The logging level.

levelStr - The level name.

syslogEquivalent - The matching syslog level.

Method Detail

toLevel

public static Level toLevel(String sArg)

Convert the string passed as argument to a level. If the conversion fails, then this method returns DEBUG.

Parameters:

sArg - The level name.

Returns:

The Level.

toLevel

public static Level toLevel(int val)

Convert an integer passed as argument to a level. If the conversion fails, then this method returns DEBUG.

Parameters:

val - The integer value of the Level.

Returns:

The Level.

toLevel

public static Level toLevel(int val,
                            Level defaultLevel)

Convert an integer passed as argument to a level. If the conversion fails, then this method returns the specified default.

Parameters:

val - The integer value of the Level.

defaultLevel - the default level if the integer doesn't match.

Returns:

The matching Level.

toLevel

public static Level toLevel(String sArg,
                            Level defaultLevel)

Convert the string passed as argument to a level. If the conversion fails, then this method returns the value of defaultLevel.

Parameters:

sArg - The name of the Level.

defaultLevel - The default Level to use.

Returns:

the matching Level.

readResolve

protected Object readResolve()
                      throws ObjectStreamException

Resolved deserialized level to one of the stock instances. May be overridden in classes derived from Level.

Returns:

resolved object.

Throws:

ObjectStreamException - if exception during resolution.