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javax.servlet
Class ServletException  

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          javax.servlet.ServletException

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

UnavailableException

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public class ServletException

extends java.lang.Exception

Defines a general exception a servlet can throw when it encounters difficulty.

Version:

$Version$

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Nested Class Summary

 

Nested classes inherited from class java.lang.Throwable

 

Field Summary
private  java.lang.Throwable	rootCause

 

Fields inherited from class java.lang.Exception

 

Fields inherited from class java.lang.Throwable

 

Constructor Summary

ServletException()           Constructs a new servlet exception.

ServletException(java.lang.String message)           Constructs a new servlet exception with the specified message.

ServletException(java.lang.String message, java.lang.Throwable rootCause)           Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation, including a description message.

ServletException(java.lang.Throwable rootCause)           Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation.

 

Method Summary
java.lang.Throwable	getRootCause()           Returns the exception that caused this servlet exception.

 

Methods inherited from class java.lang.Throwable

fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

 

Methods inherited from class java.lang.Object

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

 

Field Detail

rootCause

private java.lang.Throwable rootCause

Constructor Detail

ServletException

public ServletException()

Constructs a new servlet exception.

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ServletException

public ServletException(java.lang.String message)

Constructs a new servlet exception with the specified message. The message can be written to the server log and/or displayed for the user.

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ServletException

public ServletException(java.lang.String message,
                        java.lang.Throwable rootCause)

Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation, including a description message.

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ServletException

public ServletException(java.lang.Throwable rootCause)

Constructs a new servlet exception when the servlet needs to throw an exception and include a message about the "root cause" exception that interfered with its normal operation. The exception's message is based on the localized message of the underlying exception.

This method calls the getLocalizedMessage method on the Throwable exception to get a localized exception message. When subclassing ServletException, this method can be overridden to create an exception message designed for a specific locale.

Method Detail

getRootCause

public java.lang.Throwable getRootCause()

Returns the exception that caused this servlet exception.

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