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javafx.scene.web

Class WebErrorEvent

java.lang.Object
  • java.util.EventObject
    • javafx.event.Event
      • javafx.scene.web.WebErrorEvent

All Implemented Interfaces:

Serializable, Cloneable



public final class WebErrorEvent
extends Event
An event indicating a WebEngine error. Holds an optional text message and an optional exception associated with the error.

Since:

JavaFX 8.0

See Also:

WebEngine.onError, Serialized Form

  • Field Summary

    Fields
    Modifier and Type Field and Description
    static EventType<WebErrorEvent> ANY
    Common supertype for all WebErrorEvent types.
    static EventType<WebErrorEvent> USER_DATA_DIRECTORY_ALREADY_IN_USE
    This event occurs when a WebEngine detects that its user data directory is already in use by a WebEngine running in a different VM.
    static EventType<WebErrorEvent> USER_DATA_DIRECTORY_IO_ERROR
    This event occurs when a WebEngine encounters an I/O error while trying to create or access the user data directory.
    static EventType<WebErrorEvent> USER_DATA_DIRECTORY_SECURITY_ERROR
    This event occurs when a WebEngine encounters a security error while trying to create or access the user data directory.
    • Fields inherited from class javafx.event.Event

      consumed, eventType, NULL_SOURCE_TARGET, target
    • Fields inherited from class java.util.EventObject

      source
  • Constructor Summary

    Constructors
    Constructor and Description
    WebErrorEvent(Object source, EventType<WebErrorEvent> type, String message, Throwable exception)
    Creates a new WebErrorEvent.
  • Method Summary

    All MethodsInstance MethodsConcrete Methods
    Modifier and Type Method and Description
    Throwable getException()
    Returns the exception associated with this event.
    String getMessage()
    Returns the text message associated with this event.
    String toString()
    • Methods inherited from class javafx.event.Event

      clone, consume, copyFor, fireEvent, getEventType, getTarget, isConsumed
    • Methods inherited from class java.util.EventObject

      getSource
    • Methods inherited from class java.lang.Object

      equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
  • Field Detail

    • ANY

      public static final EventType<WebErrorEvent> ANY
      Common supertype for all WebErrorEvent types.
    • USER_DATA_DIRECTORY_ALREADY_IN_USE

      public static final EventType<WebErrorEvent> USER_DATA_DIRECTORY_ALREADY_IN_USE
      This event occurs when a WebEngine detects that its user data directory is already in use by a WebEngine running in a different VM.

      In general, multiple WebEngine instances may share a single user data directory as long as they run in the same VM. WebEngine instances running in different VMs are not allowed to share the same user data directory.

      When a WebEngine is about to start loading a web page or executing a script for the first time, it checks whether its userDataDirectory is already in use by a WebEngine running in a different VM. If the latter is the case, the WebEngine invokes the WebEngine.onError event handler, if any, with a USER_DATA_DIRECTORY_ALREADY_IN_USE event. If the invoked event handler modifies the userDataDirectory property, the WebEngine retries with the new user data directory as soon as the handler returns. If the handler does not modify the userDataDirectory property (which is the default), the WebEngine continues without the user data directory.

    • USER_DATA_DIRECTORY_IO_ERROR

      public static final EventType<WebErrorEvent> USER_DATA_DIRECTORY_IO_ERROR
      This event occurs when a WebEngine encounters an I/O error while trying to create or access the user data directory.

      When a WebEngine is about to start loading a web page or executing a script for the first time, it checks whether it can create or access its userDataDirectory. If the check fails with an I/O error (such as java.io.IOException), the WebEngine invokes the WebEngine.onError event handler, if any, with a USER_DATA_DIRECTORY_IO_ERROR event. If the invoked event handler modifies the userDataDirectory property, the WebEngine retries with the new user data directory as soon as the handler returns. If the handler does not modify the userDataDirectory property (which is the default), the WebEngine continues without the user data directory.

    • USER_DATA_DIRECTORY_SECURITY_ERROR

      public static final EventType<WebErrorEvent> USER_DATA_DIRECTORY_SECURITY_ERROR
      This event occurs when a WebEngine encounters a security error while trying to create or access the user data directory.

      When a WebEngine is about to start loading a web page or executing a script for the first time, it checks whether it can create or access its userDataDirectory. If the check fails with a security error (such as java.lang.SecurityException), the WebEngine invokes the WebEngine.onError event handler, if any, with a USER_DATA_DIRECTORY_SECURITY_ERROR event. If the invoked event handler modifies the userDataDirectory property, the WebEngine retries with the new user data directory as soon as the handler returns. If the handler does not modify the userDataDirectory property (which is the default), the WebEngine continues without the user data directory.

  • Constructor Detail

    • WebErrorEvent

      public WebErrorEvent(Object source,
                           EventType<WebErrorEvent> type,
                           String message,
                           Throwable exception)
      Creates a new WebErrorEvent.

      Parameters:

      source - the event source which sent the event

  • Method Detail

    • getMessage

      public String getMessage()
      Returns the text message associated with this event.

      Returns:

      the text message associated with this event, or null if there is no such message

    • getException

      public Throwable getException()
      Returns the exception associated with this event.

      Returns:

      the exception associated with this event, or null if there is no such exception

    • toString

      public String toString()

      Overrides:

      toString in class EventObject

© 2008, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Java, JavaFX and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

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