org.openide.util

Class Exceptions

java.lang.Object

org.openide.util.Exceptions

public final class Exceptions
extends Object

Useful utility and methods to work with exceptions as described in detail in the NetBeans logging guide. Allows to annotate exceptions with messages, extract such messages and provides a common utility method to report an exception.

Since:

7.2

Method Summary

Modifier and Type	Method and Description
static <E extends Throwable> E	attachLocalizedMessage(E e, String localizedMessage) Attaches additional localized message to given exception.
static <E extends Throwable> E	attachMessage(E e, String msg) Attaches additional message to given exception.
static <E extends Throwable> E	attachSeverity(E e, Level severity) Attaches a given severity to the exception.
static String	findLocalizedMessage(Throwable t) Extracts previously attached localized message for a given throwable.
static void	printStackTrace(Throwable t) Notifies an exception with a severe level.

Methods inherited from class java.lang.Object

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

Method Detail

attachMessage

public static <E extends Throwable> E attachMessage(E e,
                                                    String msg)

Attaches additional message to given exception. This message will be visible when one does e.printStackTrace().

Type Parameters:

E - type of excetion

Parameters:

e - exception to annotate

msg - the message to add to the exception

Returns:

the exception e

attachLocalizedMessage

public static <E extends Throwable> E attachLocalizedMessage(E e,
                                                             String localizedMessage)

Attaches additional localized message to given exception. This message can be extracted later by using Exceptions.findLocalizedMessage(java.lang.Throwable).

Type Parameters:

E - type of excetion

Parameters:

e - exception to annotate

localizedMessage - the localized message to add to the exception

Returns:

the exception e

attachSeverity

public static <E extends Throwable> E attachSeverity(E e,
                                                     Level severity)

Attaches a given severity to the exception. When the exception is later passed to Exceptions.printStackTrace(java.lang.Throwable) method, the level is then used as a level for reported LogRecord. This allows those who report exceptions to annotate them as unimportant, expected.

Type Parameters:

E - type of excetion

Parameters:

e - exception to assign severity to

severity - the severity

Returns:

the exception e

Since:

8.8

findLocalizedMessage

public static String findLocalizedMessage(Throwable t)

Extracts previously attached localized message for a given throwable. Complements Exceptions.attachLocalizedMessage(E, java.lang.String).

Parameters:

t - the exception to search for a message in

Returns:

localized message attached to provided exception or null if no such message has been attached

printStackTrace

public static void printStackTrace(Throwable t)

Notifies an exception with a severe level. Such exception is going to be printed to log file and possibly also notified to alarm the user somehow.

Since version 8.29 the default implementation of this method inside a NetBeans Platform based application understands UserQuestionException. If the exception is thrown and later reported via this method, it is properly shown to the user as a dialog with approve/reject buttons. If approved, the infrastructure calls UserQuestionException.confirmed() method.

Parameters:

t - the exception to notify