NestedExceptionUtils (Spring Framework 5.2.12.RELEASE API)

java.lang.Object
- org.springframework.core.NestedExceptionUtils

```
public abstract class NestedExceptionUtils
extends Object
```
Helper class for implementing exception classes which are capable of holding nested exceptions. Necessary because we can't share a base class among different exception types.
Mainly for use within the framework.
Since:
2.0
Author:
Juergen Hoeller
See Also:
NestedRuntimeException, NestedCheckedException, NestedIOException, NestedServletException

Constructor Summary
Constructors
Constructor Description
NestedExceptionUtils()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static String`	`buildMessage(String message, Throwable cause)`	Build a message for the given base message and root cause.
`static Throwable`	`getMostSpecificCause(Throwable original)`	Retrieve the most specific cause of the given exception, that is, either the innermost cause (root cause) or the exception itself.
`static Throwable`	`getRootCause(Throwable original)`	Retrieve the innermost cause of the given exception, if any.

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

- Constructor Detail
  - NestedExceptionUtils
```
public NestedExceptionUtils()
```
- Method Detail
  - buildMessage
```
@Nullable
public static String buildMessage(@Nullable
                                  String message,
                                  @Nullable
                                  Throwable cause)
```
    Build a message for the given base message and root cause.
    Parameters:
    message - the base message
    cause - the root cause
    Returns:
    the full exception message
  - getRootCause
```
@Nullable
public static Throwable getRootCause(@Nullable
                                     Throwable original)
```
    Retrieve the innermost cause of the given exception, if any.
    Parameters:
    original - the original exception to introspect
    Returns:
    the innermost exception, or null if none
    Since:
    4.3.9
  - getMostSpecificCause
```
public static Throwable getMostSpecificCause(Throwable original)
```
    Retrieve the most specific cause of the given exception, that is, either the innermost cause (root cause) or the exception itself.
    Differs from getRootCause(java.lang.Throwable) in that it falls back to the original exception if there is no root cause.
    Parameters:
    original - the original exception to introspect
    Returns:
    the most specific cause (never null)
    Since:
    4.3.9