ConfigurationException (ConfNG 1.1.0 API)

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - org.confng.api.ConfigurationException

All Implemented Interfaces:

Serializable
```
public class ConfigurationException
extends RuntimeException
```
Exception thrown when a required configuration value is missing or invalid.
This exception is used by methods like ConfNG.getRequired(ConfNGKey) to indicate that a mandatory configuration value could not be found in any configuration source.

Example usage:
```
 try {
     String dbUrl = ConfNG.getRequired(MyConfig.DATABASE_URL);
 } catch (ConfigurationException e) {
     // Handle missing required configuration
     System.err.println("Missing required config: " + e.getKey());
 }
 
```
Since:

1.1.0

Author:

Bharat Kumar Malviya, GitHub: github.com/imBharatMalviya

See Also:

ConfNG.getRequired(ConfNGKey), Serialized Form

Constructor Summary

Constructors
Constructor	Description
`ConfigurationException(String key)`	Creates a new ConfigurationException for a missing required configuration.
`ConfigurationException(String key, String message)`	Creates a new ConfigurationException with a custom message.
`ConfigurationException(String key, String message, Throwable cause)`	Creates a new ConfigurationException with a cause.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getErrorMessage()`	Gets the error message.
`String`	`getKey()`	Gets the configuration key that caused this exception.

Methods inherited from class java.lang.Throwable
addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

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

- Constructor Detail
  - ConfigurationException
```
public ConfigurationException(String key)
```
    Creates a new ConfigurationException for a missing required configuration.
    
    Parameters:
    
    key - the configuration key that was missing
  - ConfigurationException
```
public ConfigurationException(String key,
                              String message)
```
    Creates a new ConfigurationException with a custom message.
    
    Parameters:
    
    key - the configuration key
    
    message - the error message
  - ConfigurationException
```
public ConfigurationException(String key,
                              String message,
                              Throwable cause)
```
    Creates a new ConfigurationException with a cause.
    
    Parameters:
    
    key - the configuration key
    
    message - the error message
    
    cause - the underlying cause
- Method Detail
  - getKey
```
public String getKey()
```
    Gets the configuration key that caused this exception.
    
    Returns:
    
    the configuration key
  - getErrorMessage
```
public String getErrorMessage()
```
    Gets the error message.
    
    Returns:
    
    the error message