net.sf.btw.commons
Class Logger

java.lang.Object
  javax.microedition.lcdui.Displayable
      javax.microedition.lcdui.Screen
          javax.microedition.lcdui.Form
              net.sf.btw.commons.Logger

All Implemented Interfaces:

CommandListener

public final class Logger
extends Form
implements CommandListener

Able to log application status.

Author:

Martin Vysny

Field Summary

static int	CURRENT_LEVEL Current log level.
static boolean	ENABLE_CONSOLE If true then the original System.out is used to print log aswell.
static int	LEVEL_DEBUG Debug log level.
static int	LEVEL_ERROR Error log level.
static int	LEVEL_INFO Info log level.
static int	LEVEL_WARNING Warning log level.

Constructor Summary

Logger(Displayable previous, Display display)
Constructs new logger form, immediately switching to the form.

Method Summary

void	commandAction(Command arg0, Displayable arg1)
static void	debug(String message, Throwable ex) Logs an debug message.
static void	error(String message, Throwable ex) Logs an error message.
static void	info(String message, Throwable ex) Logs an info message.
static boolean	isLoggable(int level) Checks if given level is loggable with current log level setting.
static void	log(int level, String message, Throwable ex) Logs given event.
static void	warn(String message, Throwable ex) Logs an warning message.

Methods inherited from class javax.microedition.lcdui.Form

append, append, append, delete, deleteAll, get, getHeight, getWidth, insert, set, setItemStateListener, size

Methods inherited from class javax.microedition.lcdui.Displayable

addCommand, getTicker, getTitle, isShown, removeCommand, setCommandListener, setTicker, setTitle, sizeChanged

Methods inherited from class java.lang.Object

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

Field Detail

LEVEL_ERROR

public static final int LEVEL_ERROR

Error log level.

See Also:

Constant Field Values

LEVEL_WARNING

public static final int LEVEL_WARNING

Warning log level.

See Also:

Constant Field Values

LEVEL_INFO

public static final int LEVEL_INFO

Info log level.

See Also:

Constant Field Values

LEVEL_DEBUG

public static final int LEVEL_DEBUG

Debug log level.

See Also:

Constant Field Values

CURRENT_LEVEL

public static int CURRENT_LEVEL

Current log level. Log events below this level are ignored. Default value is LEVEL_WARNING.

ENABLE_CONSOLE

public static boolean ENABLE_CONSOLE

If true then the original System.out is used to print log aswell.

Constructor Detail

Logger

public Logger(Displayable previous,
              Display display)

Constructs new logger form, immediately switching to the form.

Parameters:

previous - switch to this displayable when the log window is closed.

display - the display instance

Method Detail

isLoggable

public static boolean isLoggable(int level)

Checks if given level is loggable with current log level setting.

Parameters:

level - level to query

Returns:

true if a message with given level is logged, false if it is thrown away.

log

public static void log(int level,
                       String message,
                       Throwable ex)

Logs given event.

Parameters:

level - the log level.

message - the message to log. May be null - in this case exception message is used.

ex - exception to log. May be null only if message is not null.

info

public static void info(String message,
                        Throwable ex)

Logs an info message.

Parameters:

message - the message to log. May be null - in this case exception message is used.

ex - exception to log. May be null only if message is not null.

error

public static void error(String message,
                         Throwable ex)

Logs an error message.

Parameters:

message - the message to log. May be null - in this case exception message is used.

ex - exception to log. May be null only if message is not null.

warn

public static void warn(String message,
                        Throwable ex)

Logs an warning message.

Parameters:

message - the message to log. May be null - in this case exception message is used.

ex - exception to log. May be null only if message is not null.

debug

public static void debug(String message,
                         Throwable ex)

Logs an debug message.

Parameters:

message - the message to log. May be null - in this case exception message is used.

ex - exception to log. May be null only if message is not null.

commandAction

public void commandAction(Command arg0,
                          Displayable arg1)

Specified by:

commandAction in interface CommandListener