Package org.jeegen.jee6.util

Class LogUtil

java.lang.Object

org.jeegen.jee6.util.LogUtil

public class LogUtil
extends Object

This class helps logging in a performant manner.

Constructor Summary

Constructors

Constructor	Description
LogUtil()

Method Summary

Modifier and Type	Method	Description
static String	banner(String key, String product)	This method builds a standard startup banner using the bundle name and the version string extracted from the resource bundle.
static void	debug(org.apache.commons.logging.Log log, String format, Object... arguments)	This method prints a debug message into a given log with given message objects.
static void	error(org.apache.commons.logging.Log log, String format, Object... arguments)	This method prints an error message into a given log with given message objects.
static String	format(String format, Object... arguments)	This method formats a String using the MessageFormat.format(String, Object...) method.
static void	info(org.apache.commons.logging.Log log, String format, Object... arguments)	This method prints an info message into a given log with given message objects.
static boolean	isEmpty(String input)	This method tests a given String if it is null or has zero length.
static String	printf(String format, Object... arguments)	This method formats a String using the PrintWriter.printf(String, Object...) method.
static void	trace(org.apache.commons.logging.Log log, String format, Object... arguments)	This method prints a trace message into a given log with given message objects.
static void	warn(org.apache.commons.logging.Log log, String format, Object... arguments)	This method prints a warn message into a given log with given message objects.

Methods inherited from class java.lang.Object

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

Constructor Detail

LogUtil

public LogUtil()

Method Detail

printf

public static final String printf(String format,
                                  Object... arguments)

This method formats a String using the PrintWriter.printf(String, Object...) method.

Parameters:

format - The format String.

arguments - The arguments to be formatted.

Returns:

The completely formatted String.

trace

public static final void trace(org.apache.commons.logging.Log log,
                               String format,
                               Object... arguments)

This method prints a trace message into a given log with given message objects. The message is formatted using printf(String, Object...) with given objects. The formatting needs only be done if trace logging is enabled.

Parameters:

log - The Log instance.

format - The formattable messaage.

arguments - The message objects formatted into the massage.

debug

public static final void debug(org.apache.commons.logging.Log log,
                               String format,
                               Object... arguments)

This method prints a debug message into a given log with given message objects. The message is formatted using printf(String, Object...) with given objects. The formatting needs only be done if debug logging is enabled.

Parameters:

log - The Log instance.

format - The formattable messaage.

arguments - The message objects formatted into the massage.

info

public static final void info(org.apache.commons.logging.Log log,
                              String format,
                              Object... arguments)

This method prints an info message into a given log with given message objects. The message is formatted using printf(String, Object...) with given objects. The formatting needs only be done if info logging is enabled.

Parameters:

log - The Log instance.

format - The formattable messaage.

arguments - The message objects formatted into the massage.

warn

public static final void warn(org.apache.commons.logging.Log log,
                              String format,
                              Object... arguments)

This method prints a warn message into a given log with given message objects. The message is formatted using printf(String, Object...) with given objects. The formatting needs only be done if warn logging is enabled.

Parameters:

log - The Log instance.

format - The formattable messaage.

arguments - The message objects formatted into the massage.

error

public static final void error(org.apache.commons.logging.Log log,
                               String format,
                               Object... arguments)

This method prints an error message into a given log with given message objects. The message is formatted using printf(String, Object...) with given objects. The formatting needs only be done if error logging is enabled.

Parameters:

log - The Log instance.

format - The formattable messaage.

arguments - The message objects formatted into the massage.

format

public static final String format(String format,
                                  Object... arguments)

This method formats a String using the MessageFormat.format(String, Object...) method.

Parameters:

format - The format String.

arguments - The arguments to be formatted.

Returns:

The completely formatted String.

isEmpty

public static final boolean isEmpty(String input)

This method tests a given String if it is null or has zero length.

Parameters:

input - The String object to test.

Returns:

true if given text is null or has zero length.

banner

public static String banner(String key,
                            String product)

This method builds a standard startup banner using the bundle name and the version string extracted from the resource bundle.

Parameters:

key - The resource bundle key to use.

product - The product name.

Returns:

The banner string to display.