java.util.logging

Class Level

java.lang.Object

java.util.logging.Level

public class Level
extends Object

Level defines a set of standard logging levels. The Level objects are ordered thanks to integer values. Levels are used to control logging output. Enabling logging at a given level also enables logging at all higher levels.

Clients should normally used the predefined Level constants provided by this class. These levels are, from highest to lowest:

• SEVERE
• WARNING
• INFO
• CONFIG
• FINE
• FINER
• FINEST

There are also two special levels:

• ALL to enable logging all messages.
• OFF to turn off logging.

Field Summary

Fields

Modifier and Type	Field and Description
static Level	ALL ALL indicates that all messages should be logged.
static Level	CONFIG CONFIG is a message level for static configuration messages.
static Level	FINE FINE is a message level providing tracing information.
static Level	FINER FINER indicates a fairly detailed tracing message.
static Level	FINEST FINEST indicates a highly detailed tracing message.
static Level	INFO INFO is a message level for informational messages.
static Level	OFF OFF is a special level that can be used to turn off logging.
static Level	SEVERE SEVERE is a message level indicating a serious failure.
static Level	WARNING WARNING is a message level indicating a potential problem.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Level(String name, int value) Creates a named Level with the given integer value.

Method Summary

Modifier and Type	Method and Description
String	getName() Return the name of the level.
int	intValue() Return the integer value of the level.
String	toString() Returns a string representation of the object.

Methods inherited from class java.lang.Object

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

Field Detail

OFF

public static final Level OFF

OFF is a special level that can be used to turn off logging. This level is initialized to Integer.MAX_VALUE.

SEVERE

public static final Level SEVERE

SEVERE is a message level indicating a serious failure.

In general SEVERE messages should describe events that are of considerable importance and which will prevent normal program execution. They should be reasonably intelligible to end users and to system administrators. This level is initialized to .

WARNING

public static final Level WARNING

WARNING is a message level indicating a potential problem.

In general WARNING messages should describe events that will be of interest to end users or system managers, or which indicate potential problems. This level is initialized to .

INFO

public static final Level INFO

INFO is a message level for informational messages.

Typically INFO messages will be written to the console or its equivalent. So the INFO level should only be used for reasonably significant messages that will make sense to end users and system admins. This level is initialized to .

CONFIG

public static final Level CONFIG

CONFIG is a message level for static configuration messages.

CONFIG messages are intended to provide a variety of static configuration information, to assist in debugging problems that may be associated with particular configurations. For example, CONFIG message might include the CPU type, the graphics depth, the GUI look-and-feel, etc. This level is initialized to .

FINE

public static final Level FINE

FINE is a message level providing tracing information.

All of FINE, FINER, and FINEST are intended for relatively detailed tracing. The exact meaning of the three levels will vary between subsystems, but in general, FINEST should be used for the most voluminous detailed output, FINER for somewhat less detailed output, and FINE for the lowest volume (and most important) messages.

In general the FINE level should be used for information that will be broadly interesting to developers who do not have a specialized interest in the specific subsystem.

FINE messages might include things like minor (recoverable) failures. Issues indicating potential performance problems are also worth logging as FINE. This level is initialized to .

FINER

public static final Level FINER

FINER indicates a fairly detailed tracing message. By default logging calls for entering, returning, or throwing an exception are traced at this level. This level is initialized to .

FINEST

public static final Level FINEST

FINEST indicates a highly detailed tracing message. This level is initialized to .

ALL

public static final Level ALL

ALL indicates that all messages should be logged. This level is initialized to Integer.MIN_VALUE.

Constructor Detail

Level

protected Level(String name,
                int value)

Creates a named Level with the given integer value.

Parameters:

name - the name of the level. For example "SEVERE".

value - must be one the value above.

Method Detail

getName

public String getName()

Return the name of the level.

Returns:

the name.

intValue

public int intValue()

Return the integer value of the level. This value is useful to compare to level objects. The greater this number is, the highest the level is.

Returns:

the integer value for this level.

toString

public String toString()

Description copied from class: Object

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Overrides:

toString in class Object

Returns:

a string representation of the object.