POILogger (The Adobe Experience Manager SDK 2022.7.8005.20220711T194049Z-220600)

java.lang.Object
- org.apache.poi.util.POILogger

Direct Known Subclasses:

CommonsLogger, NullLogger, SystemOutLogger
```
@Internal
public abstract class POILogger
extends Object
```
A logger interface that strives to make it as easy as possible for developers to write log calls, while simultaneously making those calls as cheap as possible by performing lazy evaluation of the log message.

Field Summary

Fields
Modifier and Type Field Description

static int DEBUG

static int ERROR

static int FATAL

static int INFO

static int WARN

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract boolean`	`check(int level)`	Check if a logger is enabled to log at the specified level This allows code to avoid building strings or evaluating functions in the arguments to log.
`abstract void`	`initialize(String cat)`
`void`	`log(int level, Object... objs)`	Log a message.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEBUG
```
public static final int DEBUG
```
    See Also:
    
    Constant Field Values
  - INFO
```
public static final int INFO
```
    See Also:
    
    Constant Field Values
  - WARN
```
public static final int WARN
```
    See Also:
    
    Constant Field Values
  - ERROR
```
public static final int ERROR
```
    See Also:
    
    Constant Field Values
  - FATAL
```
public static final int FATAL
```
    See Also:
    
    Constant Field Values
- Method Detail
  - initialize
```
public abstract void initialize(String cat)
```
  - check
```
public abstract boolean check(int level)
```
    Check if a logger is enabled to log at the specified level This allows code to avoid building strings or evaluating functions in the arguments to log. An example: if (logger.check(POILogger.INFO)) { logger.log(POILogger.INFO, "Avoid concatenating " + " strings and evaluating " + functions()); }
    Parameters:
    
    level - One of DEBUG, INFO, WARN, ERROR, FATAL
  - log
```
public void log(int level,
                Object... objs)
```
    Log a message. Lazily appends Object parameters together. If the last parameter is a Throwable it is logged specially.
    
    Parameters:
    
    level - One of DEBUG, INFO, WARN, ERROR, FATAL
    
    objs - the objects to place in the message