Package org.apache.tomcat.util

Class ExceptionUtils

java.lang.Object

org.apache.tomcat.util.ExceptionUtils

public class ExceptionUtils
extends java.lang.Object

Utilities for handling Throwables and Exceptions.

Constructor Summary

Constructors

Constructor	Description
ExceptionUtils()

Method Summary

Modifier and Type	Method	Description
static void	handleThrowable(java.lang.Throwable t)	Checks whether the supplied Throwable is one that needs to be rethrown and swallows all others.
static void	preload()	NO-OP method provided to enable simple pre-loading of this class.
static java.lang.Throwable	unwrapInvocationTargetException(java.lang.Throwable t)	Checks whether the supplied Throwable is an instance of InvocationTargetException and returns the throwable that is wrapped by it, if there is any.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExceptionUtils

public ExceptionUtils()

Method Detail

handleThrowable

public static void handleThrowable(java.lang.Throwable t)

Checks whether the supplied Throwable is one that needs to be rethrown and swallows all others.

Parameters:

t - the Throwable to check

unwrapInvocationTargetException

public static java.lang.Throwable unwrapInvocationTargetException(java.lang.Throwable t)

Checks whether the supplied Throwable is an instance of InvocationTargetException and returns the throwable that is wrapped by it, if there is any.

Parameters:

t - the Throwable to check

Returns:

t or t.getCause()

preload

public static void preload()

NO-OP method provided to enable simple pre-loading of this class. Since the class is used extensively in error handling, it is prudent to pre-load it to avoid any failure to load this class masking the true problem during error handling.