ExceptionUtils (MortBay :: Apache Jasper :: JSP Implementation 9.0.107 API)

java.lang.Object
- org.apache.tomcat.util.ExceptionUtils

```
public class ExceptionUtils
extends Object
```
Utilities for handling Throwables and Exceptions.

Constructor Summary

Constructors
Constructor Description

ExceptionUtils()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`handleThrowable(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 preloading of this class.
`static Throwable`	`unwrapInvocationTargetException(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(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 Throwable unwrapInvocationTargetException(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 preloading of this class. Since the class is used extensively in error handling, it is prudent to preload it to avoid any failure to load this class masking the true problem during error handling.