Log (The ZKoss Common Library 8.0.0 API)

java.lang.Object
- org.zkoss.util.logging.Log

Deprecated.
As of release 7.0.0, use SLF4J API for logging instead.
```
public class Log
extends Object
```
The logger. Usage:
private static final Log log = Log.lookup(MyClass.class); ... if (log.debugable()) log.debug("the information to log:"+some);
Log is designed to minimize the memory usage by avoiding unnecessary allocation of java.util.logging.Logger. In additions, it is possible to use different logger, e.g., log4j, without affecting the client codes.
Since this object is very light-weight, it is OK to have the following statement without using it.
private static final Log log = Log.lookup(MyClass.class);
To log error or warning, simple use the error and warning method.
To log info, depending on the complexity you might want to test infoable first.
```
log.info("a simple info");
if (log.infoable())
  log.info(a + complex + string + operation);
```
To log debug information, we usually also test with D.
```
log.debug("a simple info");
if (log.debugable())
  log.debug(a + complex + string + operation);
```
There is a special level called FINER whose priority is lower than DEBUG. It is generally used to log massive debug message under certain situation. In other words, it is suggested to use the debug methods to log messages as follows:
```
if (log.finerable()) {
  ... do massive testing and/or printing (use finer)
}
```
Author:

tomyeh

Field Summary

Fields
Modifier and Type	Field and Description
`static Level`	`ALL` Deprecated. All levels.
`static Level`	`DEBUG` Deprecated. The DEBUG level.
`static Level`	`ERROR` Deprecated. The ERROR level.
`static Level`	`FINER` Deprecated. The FINER level.
`static Level`	`INFO` Deprecated. The INFO level.
`static Level`	`OFF` Deprecated. The OFF level used to turn of the logging.
`static Level`	`WARNING` Deprecated. The WARNING level.

Constructor Summary

Constructors
Modifier Constructor and Description

protected Log(String name)
Deprecated.

The constructor.

Constructors
Modifier	Constructor and Description
`protected`	`Log(String name)` Deprecated. The constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`static void`	`configure(Properties props)` Deprecated. Configures based the properties.
`void`	`debug(int code)` Deprecated. Logs a debug message by giving message code.
`void`	`debug(int code, Object fmtArg)` Deprecated. Logs a debug message by giving message code.
`void`	`debug(int code, Object[] fmtArgs)` Deprecated. Logs a debug message by giving message code.
`void`	`debug(int code, Object[] fmtArgs, Throwable t)` Deprecated. Logs a debug message and a throwable object by giving message code.
`void`	`debug(int code, Object fmtArg, Throwable t)` Deprecated. Logs a debug message and a throwable object by giving message code.
`void`	`debug(int code, Throwable t)` Deprecated. Logs a debug message and a throwable object by giving message code.
`void`	`debug(Object obj)` Deprecated. Logs an object, whose toString returns the debug message.
`void`	`debug(Object obj, Throwable t)` Deprecated. Logs an object, whose toString returns the debug message, and a throwable object.
`void`	`debug(String msg)` Deprecated. Logs a debug message.
`void`	`debug(String format, Object... args)` Deprecated. Logs a debug message with a format and arguments.
`void`	`debug(String msg, Throwable t)` Deprecated. Logs a debug message and a throwable object.
`void`	`debug(Throwable t)` Deprecated. Logs a debug throwable object.
`boolean`	`debugable()` Deprecated. Tests whether the `DEBUG` level is loggable.
`void`	`eat(String message, Throwable ex)` Deprecated. Logs an exception as an warning message about being eaten (rather than thrown).
`void`	`eat(Throwable ex)` Deprecated. Logs an exception as an warning message about being eaten (rather than thrown).
`boolean`	`equals(Object o)` Deprecated.
`void`	`error(int code)` Deprecated. Logs an error message by giving message code.
`void`	`error(int code, Object fmtArg)` Deprecated. Logs an error message by giving message code.
`void`	`error(int code, Object[] fmtArgs)` Deprecated. Logs an error message by giving message code.
`void`	`error(int code, Object[] fmtArgs, Throwable t)` Deprecated. Logs an error message and a throwable object by giving message code.
`void`	`error(int code, Object fmtArg, Throwable t)` Deprecated. Logs an error message and a throwable object by giving message code.
`void`	`error(int code, Throwable t)` Deprecated. Logs an error message and a throwable object by giving message code.
`void`	`error(Object obj)` Deprecated. Logs an object, whose toString returns the error message.
`void`	`error(Object obj, Throwable t)` Deprecated. Logs an object, whose toString returns the error message, and a throwable object.
`void`	`error(String msg)` Deprecated. Logs an error message.
`void`	`error(String format, Object... args)` Deprecated. Logs a debug message with a format and arguments.
`void`	`error(String msg, Throwable t)` Deprecated. Logs an error message and a throwable object.
`void`	`error(Throwable t)` Deprecated. Logs an error throwable object.
`boolean`	`errorable()` Deprecated. Tests whether the `ERROR` level is loggable.
`void`	`finer(int code)` Deprecated. Logs a finer message by giving message code.
`void`	`finer(int code, Object fmtArg)` Deprecated. Logs a finer message by giving message code.
`void`	`finer(int code, Object[] fmtArgs)` Deprecated. Logs a finer message by giving message code.
`void`	`finer(int code, Object[] fmtArgs, Throwable t)` Deprecated. Logs a finer message and a throwable object by giving message code.
`void`	`finer(int code, Object fmtArg, Throwable t)` Deprecated. Logs a finer message and a throwable object by giving message code.
`void`	`finer(int code, Throwable t)` Deprecated. Logs a finer message and a throwable object by giving message code.
`void`	`finer(Object obj)` Deprecated. Logs an object, whose toString returns the finer message.
`void`	`finer(Object obj, Throwable t)` Deprecated. Logs an object, whose toString returns the finer message, and a throwable object.
`void`	`finer(String msg)` Deprecated. Logs a finer message.
`void`	`finer(String format, Object... args)` Deprecated. Logs a finer message with a format and arguments.
`void`	`finer(String msg, Throwable t)` Deprecated. Logs a finer message and a throwable object.
`void`	`finer(Throwable t)` Deprecated. Logs a finer throwable object.
`boolean`	`finerable()` Deprecated. Tests whether the `FINER` level is loggable.
`Level`	`getLevel()` Deprecated. Returns the logging level.
`static Level`	`getLevel(String level)` Deprecated. Return the logging level of the specified string.
`String`	`getName()` Deprecated. Returns the name of this logger.
`int`	`hashCode()` Deprecated.
`void`	`info(int code)` Deprecated. Logs an info message by giving message code.
`void`	`info(int code, Object fmtArg)` Deprecated. Logs an info message by giving message code.
`void`	`info(int code, Object[] fmtArgs)` Deprecated. Logs an info message by giving message code.
`void`	`info(int code, Object[] fmtArgs, Throwable t)` Deprecated. Logs an info message and a throwable object by giving message code.
`void`	`info(int code, Object fmtArg, Throwable t)` Deprecated. Logs an info message and a throwable object by giving message code.
`void`	`info(int code, Throwable t)` Deprecated. Logs an info message and a throwable object by giving message code.
`void`	`info(Object obj)` Deprecated. Logs an object, whose toString returns the info message.
`void`	`info(Object obj, Throwable t)` Deprecated. Logs an object, whose toString returns the info message, and a throwable object.
`void`	`info(String msg)` Deprecated. Logs an info message.
`void`	`info(String format, Object... args)` Deprecated. Logs an info message with a format and arguments.
`void`	`info(String msg, Throwable t)` Deprecated. Logs an info message and a throwable object.
`void`	`info(Throwable t)` Deprecated. Logs an info throwable object.
`boolean`	`infoable()` Deprecated. Tests whether the `INFO` level is loggable.
`static boolean`	`isHierarchy()` Deprecated. Returns whether the loggers support hierarchy.
`void`	`log(Level level, int code, Object[] fmtArgs, Throwable t)` Deprecated. Logs a message and a throwable object at the giving level by giving a message code and multiple format arguments.
`void`	`log(Level level, int code, Object fmtArg, Throwable t)` Deprecated. Logs a message and a throwable object at the giving level by giving a message code and ONE format argument.
`void`	`log(Level level, int code, Throwable t)` Deprecated. Logs a message and a throwable object at the giving level by giving a message code and NO format argument.
`void`	`log(Level level, Object obj, Throwable t)` Deprecated. Logs any object and a throwable object at the giving level.
`void`	`log(Level level, String msg, Throwable t)` Deprecated. Logs a message and a throwable object at the giving level.
`static Log`	`lookup(Class cls)` Deprecated. Gets the logger based on the class.
`static Log`	`lookup(Package pkg)` Deprecated. Gets the logger based on the package.
`static Log`	`lookup(String name)` Deprecated. Gets the logger based on the giving name.
`void`	`realCause(String message, Throwable ex)` Deprecated. Logs only the real cause of the specified exception with an extra message as an error message.
`void`	`realCause(Throwable ex)` Deprecated. Logs only the real cause of the specified exception.
`void`	`realCauseBriefly(String message, Throwable ex)` Deprecated. Logs only the first few lines of the real cause as an error message.
`void`	`realCauseBriefly(Throwable ex)` Deprecated. Logs only the first few lines of the real cause as an error message.
`static void`	`setHierarchy(boolean hierarchy)` Deprecated. Sets whether to support the hierarchical loggers.
`void`	`setLevel(Level level)` Deprecated. Sets the logging level.
`void`	`setLevel(String level)` Deprecated. Sets the logging level.
`String`	`toString()` Deprecated.
`void`	`warning(int code)` Deprecated. Logs a warning message by giving message code.
`void`	`warning(int code, Object fmtArg)` Deprecated. Logs a warning message by giving message code.
`void`	`warning(int code, Object[] fmtArgs)` Deprecated. Logs a warning message by giving message code.
`void`	`warning(int code, Object[] fmtArgs, Throwable t)` Deprecated. Logs a warning message and a throwable object by giving message code.
`void`	`warning(int code, Object fmtArg, Throwable t)` Deprecated. Logs a warning message and a throwable object by giving message code.
`void`	`warning(int code, Throwable t)` Deprecated. Logs a warning message and a throwable object by giving message code.
`void`	`warning(Object obj)` Deprecated. Logs an object, whose toString returns the warning message.
`void`	`warning(Object obj, Throwable t)` Deprecated. Logs an object, whose toString returns the warning message, and a throwable object.
`void`	`warning(String msg)` Deprecated. Logs a warning message.
`void`	`warning(String format, Object... args)` Deprecated. Logs a warning message with a format and arguments.
`void`	`warning(String msg, Throwable t)` Deprecated. Logs a warning message and a throwable object.
`void`	`warning(Throwable t)` Deprecated. Logs a warning throwable object.
`boolean`	`warningable()` Deprecated. Tests whether the `WARNING` level is loggable.
`void`	`warningBriefly(String message, Throwable ex)` Deprecated. Logs only the first few lines of the real cause as an warning message.
`void`	`warningBriefly(Throwable ex)` Deprecated. Lo only the first few lines of the real cause.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - ALL
```
public static final Level ALL
```
    Deprecated.
    
    All levels.
  - ERROR
```
public static final Level ERROR
```
    Deprecated.
    
    The ERROR level.
  - WARNING
```
public static final Level WARNING
```
    Deprecated.
    
    The WARNING level.
  - INFO
```
public static final Level INFO
```
    Deprecated.
    
    The INFO level.
  - DEBUG
```
public static final Level DEBUG
```
    Deprecated.
    
    The DEBUG level.
  - FINER
```
public static final Level FINER
```
    Deprecated.
    
    The FINER level.
  - OFF
```
public static final Level OFF
```
    Deprecated.
    
    The OFF level used to turn of the logging.
- Constructor Detail
  - Log
```
protected Log(String name)
```
    Deprecated.
    
    The constructor.
- Method Detail
  - configure
```
public static final void configure(Properties props)
```
    Deprecated.
    
    Configures based the properties.
    The key is a logger name and the value is the level.
    
    Parameters:
    props - the properties
    Since:
    
    6.0.0
  - isHierarchy
```
public static final boolean isHierarchy()
```
    Deprecated.
    
    Returns whether the loggers support hierarchy. If hierarchy is supported, a Log instance is mapped to a Logger instance with the same name. Therefore, it forms the hierarchical relationship among Logger instances. It has the best resolution to control which logger to enable.
    On the other hand, if the loggers don't support hierarchy, all Log instances are actually mapped to the same Logger called "org.zkoss". The performance is better in this mode.
    Default: false.
    Note: configure(java.util.Properties) will invoke setHierarchy(boolean) with true automatically to turn on the hierarchy support, if any level is defined.
  - setHierarchy
```
public static final void setHierarchy(boolean hierarchy)
```
    Deprecated.
    
    Sets whether to support the hierarchical loggers.
  - lookup
```
public static final Log lookup(Class cls)
```
    Deprecated.
    
    Gets the logger based on the class.
    
    Parameters:
    cls - the class that identifies the logger.
  - lookup
```
public static final Log lookup(String name)
```
    Deprecated.
    
    Gets the logger based on the giving name.
    Since 5.0.7, this constructor, unlike others, ignores isHierarchy() and always assumes the hierarchy name. Notice the hierarchy is always disabled if a library property called org.zkoss.util.logging.hierarchy.disabled is set to true.
  - lookup
```
public static final Log lookup(Package pkg)
```
    Deprecated.
    
    Gets the logger based on the package.
  - getName
```
public final String getName()
```
    Deprecated.
    
    Returns the name of this logger.
  - getLevel
```
public final Level getLevel()
```
    Deprecated.
    
    Returns the logging level.
  - setLevel
```
public final void setLevel(Level level)
```
    Deprecated.
    
    Sets the logging level.
  - setLevel
```
public final void setLevel(String level)
```
    Deprecated.
    
    Sets the logging level.
    
    Since:
    
    5.0.7
  - getLevel
```
public static final Level getLevel(String level)
```
    Deprecated.
    
    Return the logging level of the specified string.
    
    Returns:
    the level; null if no match at all
  - errorable
```
public final boolean errorable()
```
    Deprecated.
    
    Tests whether the ERROR level is loggable.
  - warningable
```
public final boolean warningable()
```
    Deprecated.
    
    Tests whether the WARNING level is loggable.
  - infoable
```
public final boolean infoable()
```
    Deprecated.
    
    Tests whether the INFO level is loggable.
  - debugable
```
public final boolean debugable()
```
    Deprecated.
    
    Tests whether the DEBUG level is loggable.
  - finerable
```
public final boolean finerable()
```
    Deprecated.
    
    Tests whether the FINER level is loggable.
  - log
```
public final void log(Level level,
       String msg,
       Throwable t)
```
    Deprecated.
    
    Logs a message and a throwable object at the giving level.
    All log methods eventually invokes this method to log messages.
    
    Parameters:
    t - the throwable object; null to ignore
  - log
```
public final void log(Level level,
       Object obj,
       Throwable t)
```
    Deprecated.
    
    Logs any object and a throwable object at the giving level.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - log
```
public final void log(Level level,
       int code,
       Object[] fmtArgs,
       Throwable t)
```
    Deprecated.
    
    Logs a message and a throwable object at the giving level by giving a message code and multiple format arguments.
    
    Parameters:
    t - the throwable object; null to ignore
  - log
```
public final void log(Level level,
       int code,
       Object fmtArg,
       Throwable t)
```
    Deprecated.
    
    Logs a message and a throwable object at the giving level by giving a message code and ONE format argument.
    
    Parameters:
    t - the throwable object; null to ignore
  - log
```
public final void log(Level level,
       int code,
       Throwable t)
```
    Deprecated.
    
    Logs a message and a throwable object at the giving level by giving a message code and NO format argument.
    
    Parameters:
    t - the throwable object; null to ignore
  - error
```
public void error(String format,
         Object... args)
```
    Deprecated.
    
    Logs a debug message with a format and arguments. The message is formatted by use of String.format.
    
    Since:
    
    6.0.0
  - error
```
public final void error(String msg,
         Throwable t)
```
    Deprecated.
    
    Logs an error message and a throwable object.
    
    See Also:
    errorable()
  - error
```
public final void error(String msg)
```
    Deprecated.
    
    Logs an error message.
  - error
```
public final void error(Object obj,
         Throwable t)
```
    Deprecated.
    
    Logs an object, whose toString returns the error message, and a throwable object.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - error
```
public final void error(Object obj)
```
    Deprecated.
    
    Logs an object, whose toString returns the error message.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - error
```
public final void error(Throwable t)
```
    Deprecated.
    
    Logs an error throwable object.
  - error
```
public final void error(int code,
         Object[] fmtArgs,
         Throwable t)
```
    Deprecated.
    
    Logs an error message and a throwable object by giving message code.
  - error
```
public final void error(int code,
         Object fmtArg,
         Throwable t)
```
    Deprecated.
    
    Logs an error message and a throwable object by giving message code.
  - error
```
public final void error(int code,
         Throwable t)
```
    Deprecated.
    
    Logs an error message and a throwable object by giving message code.
  - error
```
public final void error(int code,
         Object[] fmtArgs)
```
    Deprecated.
    
    Logs an error message by giving message code.
  - error
```
public final void error(int code,
         Object fmtArg)
```
    Deprecated.
    
    Logs an error message by giving message code.
  - error
```
public final void error(int code)
```
    Deprecated.
    
    Logs an error message by giving message code.
  - warning
```
public void warning(String format,
           Object... args)
```
    Deprecated.
    
    Logs a warning message with a format and arguments. The message is formatted by use of String.format.
    
    Since:
    
    6.0.0
  - warning
```
public final void warning(String msg,
           Throwable t)
```
    Deprecated.
    
    Logs a warning message and a throwable object.
    
    See Also:
    warningable()
  - warning
```
public final void warning(String msg)
```
    Deprecated.
    
    Logs a warning message.
  - warning
```
public final void warning(Object obj,
           Throwable t)
```
    Deprecated.
    
    Logs an object, whose toString returns the warning message, and a throwable object.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - warning
```
public final void warning(Object obj)
```
    Deprecated.
    
    Logs an object, whose toString returns the warning message.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - warning
```
public final void warning(Throwable t)
```
    Deprecated.
    
    Logs a warning throwable object.
  - warning
```
public final void warning(int code,
           Object[] fmtArgs,
           Throwable t)
```
    Deprecated.
    
    Logs a warning message and a throwable object by giving message code.
  - warning
```
public final void warning(int code,
           Object fmtArg,
           Throwable t)
```
    Deprecated.
    
    Logs a warning message and a throwable object by giving message code.
  - warning
```
public final void warning(int code,
           Throwable t)
```
    Deprecated.
    
    Logs a warning message and a throwable object by giving message code.
  - warning
```
public final void warning(int code,
           Object[] fmtArgs)
```
    Deprecated.
    
    Logs a warning message by giving message code.
  - warning
```
public final void warning(int code,
           Object fmtArg)
```
    Deprecated.
    
    Logs a warning message by giving message code.
  - warning
```
public final void warning(int code)
```
    Deprecated.
    
    Logs a warning message by giving message code.
  - info
```
public void info(String format,
        Object... args)
```
    Deprecated.
    
    Logs an info message with a format and arguments. The message is formatted by use of String.format.
    
    Since:
    
    6.0.0
  - info
```
public final void info(String msg,
        Throwable t)
```
    Deprecated.
    
    Logs an info message and a throwable object.
    
    See Also:
    infoable()
  - info
```
public final void info(String msg)
```
    Deprecated.
    
    Logs an info message.
  - info
```
public final void info(Object obj,
        Throwable t)
```
    Deprecated.
    
    Logs an object, whose toString returns the info message, and a throwable object.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - info
```
public final void info(Object obj)
```
    Deprecated.
    
    Logs an object, whose toString returns the info message.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - info
```
public final void info(Throwable t)
```
    Deprecated.
    
    Logs an info throwable object.
  - info
```
public final void info(int code,
        Object[] fmtArgs,
        Throwable t)
```
    Deprecated.
    
    Logs an info message and a throwable object by giving message code.
  - info
```
public final void info(int code,
        Object fmtArg,
        Throwable t)
```
    Deprecated.
    
    Logs an info message and a throwable object by giving message code.
  - info
```
public final void info(int code,
        Throwable t)
```
    Deprecated.
    
    Logs an info message and a throwable object by giving message code.
  - info
```
public final void info(int code,
        Object[] fmtArgs)
```
    Deprecated.
    
    Logs an info message by giving message code.
  - info
```
public final void info(int code,
        Object fmtArg)
```
    Deprecated.
    
    Logs an info message by giving message code.
  - info
```
public final void info(int code)
```
    Deprecated.
    
    Logs an info message by giving message code.
  - debug
```
public void debug(String format,
         Object... args)
```
    Deprecated.
    
    Logs a debug message with a format and arguments. The message is formatted by use of String.format.
    
    Since:
    
    6.0.0
  - debug
```
public final void debug(String msg,
         Throwable t)
```
    Deprecated.
    
    Logs a debug message and a throwable object.
    
    Since:
    
    #debugable
  - debug
```
public final void debug(String msg)
```
    Deprecated.
    
    Logs a debug message.
  - debug
```
public final void debug(Object obj,
         Throwable t)
```
    Deprecated.
    
    Logs an object, whose toString returns the debug message, and a throwable object.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - debug
```
public final void debug(Object obj)
```
    Deprecated.
    
    Logs an object, whose toString returns the debug message.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - debug
```
public final void debug(Throwable t)
```
    Deprecated.
    
    Logs a debug throwable object.
  - debug
```
public final void debug(int code,
         Object[] fmtArgs,
         Throwable t)
```
    Deprecated.
    
    Logs a debug message and a throwable object by giving message code.
  - debug
```
public final void debug(int code,
         Object fmtArg,
         Throwable t)
```
    Deprecated.
    
    Logs a debug message and a throwable object by giving message code.
  - debug
```
public final void debug(int code,
         Throwable t)
```
    Deprecated.
    
    Logs a debug message and a throwable object by giving message code.
  - debug
```
public final void debug(int code,
         Object[] fmtArgs)
```
    Deprecated.
    
    Logs a debug message by giving message code.
  - debug
```
public final void debug(int code,
         Object fmtArg)
```
    Deprecated.
    
    Logs a debug message by giving message code.
  - debug
```
public final void debug(int code)
```
    Deprecated.
    
    Logs a debug message by giving message code.
  - finer
```
public void finer(String format,
         Object... args)
```
    Deprecated.
    
    Logs a finer message with a format and arguments. The message is formatted by use of String.format.
    
    Since:
    
    6.0.0
  - finer
```
public final void finer(String msg,
         Throwable t)
```
    Deprecated.
    
    Logs a finer message and a throwable object.
  - finer
```
public final void finer(String msg)
```
    Deprecated.
    
    Logs a finer message.
  - finer
```
public final void finer(Object obj,
         Throwable t)
```
    Deprecated.
    
    Logs an object, whose toString returns the finer message, and a throwable object.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - finer
```
public final void finer(Object obj)
```
    Deprecated.
    
    Logs an object, whose toString returns the finer message.
    
    Parameters:
    obj - the object whose toString method is called to get the message
  - finer
```
public final void finer(Throwable t)
```
    Deprecated.
    
    Logs a finer throwable object.
  - finer
```
public final void finer(int code,
         Object[] fmtArgs,
         Throwable t)
```
    Deprecated.
    
    Logs a finer message and a throwable object by giving message code.
  - finer
```
public final void finer(int code,
         Object fmtArg,
         Throwable t)
```
    Deprecated.
    
    Logs a finer message and a throwable object by giving message code.
  - finer
```
public final void finer(int code,
         Throwable t)
```
    Deprecated.
    
    Logs a finer message and a throwable object by giving message code.
  - finer
```
public final void finer(int code,
         Object[] fmtArgs)
```
    Deprecated.
    
    Logs a finer message by giving message code.
  - finer
```
public final void finer(int code,
         Object fmtArg)
```
    Deprecated.
    
    Logs a finer message by giving message code.
  - finer
```
public final void finer(int code)
```
    Deprecated.
    
    Logs a finer message by giving message code.
  - realCause
```
public final void realCause(Throwable ex)
```
    Deprecated.
    
    Logs only the real cause of the specified exception. It is useful because sometimes the stack trace is too big.
  - realCause
```
public final void realCause(String message,
             Throwable ex)
```
    Deprecated.
    
    Logs only the real cause of the specified exception with an extra message as an error message.
  - realCauseBriefly
```
public final void realCauseBriefly(String message,
                    Throwable ex)
```
    Deprecated.
    
    Logs only the first few lines of the real cause as an error message.
    To control the number of lines to log, you can specify a library property called org.zkoss.util.logging.realCauseBriefly.lines. If not specified, 6 is assumed. If nonpositive is specified, the full stack traces are logged.
    Notice that # of lines don't include packages starting with java, javax or sun.
  - realCauseBriefly
```
public final void realCauseBriefly(Throwable ex)
```
    Deprecated.
    
    Logs only the first few lines of the real cause as an error message.
  - warningBriefly
```
public final void warningBriefly(String message,
                  Throwable ex)
```
    Deprecated.
    
    Logs only the first few lines of the real cause as an warning message.
    To control the number of lines to log, you can specify a library property called org.zkoss.util.logging.warningBriefly.lines. If not specified, 3 is assumed. If nonpositive is specified, the full stack traces are logged.
    Notice that # of lines don't include packages starting with java, javax or sun.
  - warningBriefly
```
public final void warningBriefly(Throwable ex)
```
    Deprecated.
    
    Lo only the first few lines of the real cause.
  - eat
```
public final void eat(String message,
       Throwable ex)
```
    Deprecated.
    
    Logs an exception as an warning message about being eaten (rather than thrown).
  - eat
```
public final void eat(Throwable ex)
```
    Deprecated.
    
    Logs an exception as an warning message about being eaten (rather than thrown).
  - hashCode
```
public int hashCode()
```
    Deprecated.
    
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object o)
```
    Deprecated.
    
    Overrides:
    
    equals in class Object
  - toString
```
public String toString()
```
    Deprecated.
    
    Overrides:
    
    toString in class Object

Class Log

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ALL

ERROR

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INFO

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configure

isHierarchy

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lookup

lookup

lookup

getName

getLevel

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setLevel

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errorable

warningable

infoable

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log

log

log

log

log

error

error

error

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error

error

error

error

error

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warning

warning

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warning

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warning

warning

warning

warning

info

info

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info

info

info

info

info

info

debug

debug

debug

debug

debug

debug

debug