Package no.ntnu.idatt1002.demo

Class Logger

java.lang.Object

no.ntnu.idatt1002.demo.Logger

public class Logger
extends Object

A singleton logger class for purchase planner

The logger class is used to log messages to the console. It has five different log levels:

• FATAL (4)
• ERROR (3)
• WARNING (2)
• INFO (1)
• DEBUG (0)

To set the log level, use the setLevel method. The default log level is FATAL. It is singleton, meaning that the logger level persists across the entire application.

Version:

1.0

Author:

Markus Stuevold Madsbakken

See Also:

• Logger.Level

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	Logger.Level	Enum for the different log levels.

Field Summary

Fields

Modifier and Type	Field	Description
private static String	blue
private static Logger	instance
private Logger.Level	level
private static String	red
private static String	reset
private static String	yellow

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Logger()

Method Summary

Modifier and Type	Method	Description
static void	debug(String message)	Logs a debug message.
static void	error(String message)	Logs an error message.
static void	fatal(String message)	Logs a fatal message.
int	getLevelSeverity()
private static Logger	getLogger()	Get the logger instance if it exists, otherwise create a new instance.
static void	info(String message)	Logs an info message.
static void	setLevel(int level)	Set the log level to the specified level.
static void	setLevel(Logger.Level level)	Sets the log level to the specified level.
static void	warning(String message)	Logs a warning message.

Methods inherited from class java.lang.Object

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

Field Details

instance

private static Logger instance

level

private Logger.Level level

reset

private static String reset

red

private static String red

yellow

private static String yellow

blue

private static String blue

Constructor Details

Logger

private Logger()

Method Details

getLogger

private static Logger getLogger()

Get the logger instance if it exists, otherwise create a new instance.

Returns:

the logger instance

setLevel

public static void setLevel(Logger.Level level)

Sets the log level to the specified level.

Parameters:

level - The log level to set.

setLevel

public static void setLevel(int level)

Set the log level to the specified level.

A log level of 0 is DEBUG, 1 is INFO, 2 is WARNING, 3 is ERROR, and 4 is FATAL.

Parameters:

level - The log level to set.

getLevelSeverity

public int getLevelSeverity()

debug

public static void debug(String message)

Logs a debug message.

Parameters:

message - The message to log.

info

public static void info(String message)

Logs an info message.

Parameters:

message - The message to log.

warning

public static void warning(String message)

Logs a warning message.

Parameters:

message - The message to log.

error

public static void error(String message)

Logs an error message.

Parameters:

message - The message to log.

fatal

public static void fatal(String message)

Logs a fatal message.

Parameters:

message - The message to log.