BeanContextSupport (Java Platform SE 8 )
Keywords: java.beans.beancontext.BeanContextSupport class
Date: 2026-04-17

java.beans.beancontext

## Class BeanContextSupport

- java.lang.Object
- - java.beans.beancontext.BeanContextChildSupport
  - - java.beans.beancontext.BeanContextSupport

- All Implemented Interfaces:
    BeanContext, BeanContextChild, BeanContextServiceRevokedListener, BeanContextServicesListener, DesignMode, PropertyChangeListener, VetoableChangeListener, Visibility, Serializable, Iterable, Collection, EventListener
  Direct Known Subclasses:
    BeanContextServicesSupport

      public class BeanContextSupport
      extends BeanContextChildSupport
      implements BeanContext, Serializable, PropertyChangeListener, VetoableChangeListener

  This helper class provides a utility implementation of the java.beans.beancontext.BeanContext interface.

  Since this class directly implements the BeanContext interface, the class can, and is intended to be used either by subclassing this implementation, or via ad-hoc delegation of an instance of this class from another.

  Since:
    1.2
  See Also:
    Serialized Form

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `protected class` | `BeanContextSupport.BCSChild`
    `protected static class` | `BeanContextSupport.BCSIterator` protected final subclass that encapsulates an iterator but implements a noop remove() method.

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected ArrayList` | `bcmListeners` all accesses to the `protected ArrayList bcmListeners` field shall be synchronized on that object.
    `protected HashMap` | `children` all accesses to the `protected HashMap children` field shall be synchronized on that object.
    `protected boolean` | `designTime` A `boolean` indicating whether or not this object is currently in design time mode.
    `protected Locale` | `locale` The current locale of this BeanContext.
    `protected boolean` | `okToUseGui` A `boolean` indicating if this instance may now render a GUI.

    - ### Fields inherited from class java.beans.beancontext.BeanContextChildSupport

      `beanContext, beanContextChildPeer, pcSupport, rejectedSetBCOnce, vcSupport`

    - ### Fields inherited from interface java.beans.beancontext.BeanContext

      `globalHierarchyLock`

    - ### Fields inherited from interface java.beans.DesignMode

      `PROPERTYNAME`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `BeanContextSupport()` Create an instance that is not a delegate of another object
    `BeanContextSupport(BeanContext peer)` Create an instance using with a default locale
    `BeanContextSupport(BeanContext peer, Locale lcle)` Create an instance using the specified locale
    `BeanContextSupport(BeanContext peer, Locale lcle, boolean dtime)` Create an instance using the specified Locale and design mode.
    `BeanContextSupport(BeanContext peer, Locale lcle, boolean dTime, boolean visible)` Construct a BeanContextSupport instance

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `add(Object targetChild)` Adds/nests a child within this `BeanContext`.
    `boolean` | `addAll(Collection c)` add Collection to set of Children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
    `void` | `addBeanContextMembershipListener(BeanContextMembershipListener bcml)` Adds a BeanContextMembershipListener
    `boolean` | `avoidingGui()` Used to determine if the `BeanContext` child is avoiding using its GUI.
    `protected Iterator` | `bcsChildren()` Returns an iterator of all children of this `BeanContext`.
    `protected void` | `bcsPreDeserializationHook(ObjectInputStream ois)` called by readObject after defaultReadObject() but prior to deserialization of any children.
    `protected void` | `bcsPreSerializationHook(ObjectOutputStream oos)` called by writeObject after defaultWriteObject() but prior to serialization of currently serializable children.
    `protected void` | `childDeserializedHook(Object child, BeanContextSupport.BCSChild bcsc)` Called by readObject with the newly deserialized child and BCSChild.
    `protected void` | `childJustAddedHook(Object child, BeanContextSupport.BCSChild bcsc)` subclasses may override this method to simply extend add() semantics after the child has been added and before the event notification has occurred.
    `protected void` | `childJustRemovedHook(Object child, BeanContextSupport.BCSChild bcsc)` subclasses may override this method to simply extend remove() semantics after the child has been removed and before the event notification has occurred.
    `protected static boolean` | `classEquals(Class first, Class second)` Tests to see if two class objects, or their names are equal.
    `void` | `clear()` clear the children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
    `boolean` | `contains(Object o)` Determines whether or not the specified object is currently a child of this `BeanContext`.
    `boolean` | `containsAll(Collection c)` Tests to see if all objects in the specified `Collection` are children of this `BeanContext`.
    `boolean` | `containsKey(Object o)` Determines whether or not the specified object is currently a child of this `BeanContext`.
    `protected Object[]` | `copyChildren()` Gets a copy of the this BeanContext's children.
    `protected BeanContextSupport.BCSChild` | `createBCSChild(Object targetChild, Object peer)` Subclasses can override this method to insert their own subclass of Child without having to override add() or the other Collection methods that add children to the set.
    `protected void` | `deserialize(ObjectInputStream ois, Collection coll)` used by readObject to deserialize a collection.
    `void` | `dontUseGui()` notify this instance that it may no longer render a GUI.
    `protected void` | `fireChildrenAdded(BeanContextMembershipEvent bcme)` Fire a BeanContextshipEvent on the BeanContextMembershipListener interface
    `protected void` | `fireChildrenRemoved(BeanContextMembershipEvent bcme)` Fire a BeanContextshipEvent on the BeanContextMembershipListener interface
    `BeanContext` | `getBeanContextPeer()` Gets the instance of `BeanContext` that this object is providing the implementation for.
    `protected static BeanContextChild` | `getChildBeanContextChild(Object child)` Gets the BeanContextChild (if any) of the specified child
    `protected static BeanContextMembershipListener` | `getChildBeanContextMembershipListener(Object child)` Gets the BeanContextMembershipListener (if any) of the specified child
    `protected static PropertyChangeListener` | `getChildPropertyChangeListener(Object child)` Gets the PropertyChangeListener (if any) of the specified child
    `protected static Serializable` | `getChildSerializable(Object child)` Gets the Serializable (if any) associated with the specified Child
    `protected static VetoableChangeListener` | `getChildVetoableChangeListener(Object child)` Gets the VetoableChangeListener (if any) of the specified child
    `protected static Visibility` | `getChildVisibility(Object child)` Gets the Component (if any) associated with the specified child.
    `Locale` | `getLocale()` Gets the locale for this `BeanContext`.
    `URL` | `getResource(String name, BeanContextChild bcc)` Analagous to `java.lang.ClassLoader.getResource()`, this method allows a `BeanContext` implementation to interpose behavior between the child `Component` and underlying `ClassLoader`.
    `InputStream` | `getResourceAsStream(String name, BeanContextChild bcc)` Analagous to `java.lang.ClassLoader.getResourceAsStream()`, this method allows a `BeanContext` implementation to interpose behavior between the child `Component` and underlying `ClassLoader`.
    `protected void` | `initialize()` protected method called from constructor and readObject to initialize transient state of BeanContextSupport instance.
    `Object` | `instantiateChild(String beanName)` The instantiateChild method is a convenience hook in BeanContext to simplify the task of instantiating a Bean, nested, into a `BeanContext`.
    `boolean` | `isDesignTime()` Reports whether or not this object is in currently in design time mode.
    `boolean` | `isEmpty()` Reports whether or not this `BeanContext` is empty.
    `boolean` | `isSerializing()` Is this `BeanContext` in the process of being serialized?
    `Iterator` | `iterator()` Gets all JavaBean or `BeanContext` instances currently nested in this `BeanContext`.
    `boolean` | `needsGui()` This method is typically called from the environment in order to determine if the implementor "needs" a GUI.
    `void` | `okToUseGui()` Notify this instance that it may now render a GUI
    `void` | `propertyChange(PropertyChangeEvent pce)` subclasses may envelope to monitor child property changes.
    `void` | `readChildren(ObjectInputStream ois)` When an instance of this class is used as a delegate for the implementation of the BeanContext protocols (and its subprotocols) there exists a 'chicken and egg' problem during deserialization
    `boolean` | `remove(Object targetChild)` Removes a child from this BeanContext.
    `protected boolean` | `remove(Object targetChild, boolean callChildSetBC)` internal remove used when removal caused by unexpected `setBeanContext` or by `remove()` invocation.
    `boolean` | `removeAll(Collection c)` remove all specified children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
    `void` | `removeBeanContextMembershipListener(BeanContextMembershipListener bcml)` Removes a BeanContextMembershipListener
    `boolean` | `retainAll(Collection c)` retain only specified children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
    `protected void` | `serialize(ObjectOutputStream oos, Collection coll)` Used by writeObject to serialize a Collection.
    `void` | `setDesignTime(boolean dTime)` Sets the new design time value for this `BeanContext`.
    `void` | `setLocale(Locale newLocale)` Sets the locale of this BeanContext.
    `int` | `size()` Gets the number of children currently nested in this BeanContext.
    `Object[]` | `toArray()` Gets all JavaBean or `BeanContext` instances currently nested in this BeanContext.
    `Object[]` | `toArray(Object[] arry)` Gets an array containing all children of this `BeanContext` that match the types contained in arry.
    `protected boolean` | `validatePendingAdd(Object targetChild)` Subclasses of this class may override, or envelope, this method to add validation behavior for the BeanContext to examine child objects immediately prior to their being added to the BeanContext.
    `protected boolean` | `validatePendingRemove(Object targetChild)` Subclasses of this class may override, or envelope, this method to add validation behavior for the BeanContext to examine child objects immediately prior to their being removed from the BeanContext.
    `void` | `vetoableChange(PropertyChangeEvent pce)` subclasses may envelope to monitor veto child property changes.
    `void` | `writeChildren(ObjectOutputStream oos)` Used to serialize all children of this `BeanContext`.

    - ### Methods inherited from class java.beans.beancontext.BeanContextChildSupport

      `addPropertyChangeListener, addVetoableChangeListener, firePropertyChange, fireVetoableChange, getBeanContext, getBeanContextChildPeer, initializeBeanContextResources, isDelegated, releaseBeanContextResources, removePropertyChangeListener, removeVetoableChangeListener, serviceAvailable, serviceRevoked, setBeanContext, validatePendingSetBeanContext`

    - ### Methods inherited from class java.lang.Object

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

    - ### Methods inherited from interface java.beans.beancontext.BeanContextChild

      `addPropertyChangeListener, addVetoableChangeListener, getBeanContext, removePropertyChangeListener, removeVetoableChangeListener, setBeanContext`

    - ### Methods inherited from interface java.util.Collection

      `equals, hashCode, parallelStream, removeIf, spliterator, stream`

    - ### Methods inherited from interface java.lang.Iterable

      `forEach`

- - ### Field Detail

    - #### children

          protected transient HashMap children

      all accesses to the `protected HashMap children` field shall be synchronized on that object.

    - #### bcmListeners

          protected transient ArrayList bcmListeners

      all accesses to the `protected ArrayList bcmListeners` field shall be synchronized on that object.

    - #### locale

          protected Locale locale

      The current locale of this BeanContext.

    - #### okToUseGui

          protected boolean okToUseGui

      A `boolean` indicating if this instance may now render a GUI.

    - #### designTime

          protected boolean designTime

      A `boolean` indicating whether or not this object is currently in design time mode.

  - ### Constructor Detail

    - #### BeanContextSupport

          public BeanContextSupport(BeanContext peer,
                                    Locale lcle,
                                    boolean dTime,
                                    boolean visible)

      Construct a BeanContextSupport instance
      Parameters:
        `peer` - The peer `BeanContext` we are supplying an implementation for, or `null` if this object is its own peer
        `lcle` - The current Locale for this BeanContext. If `lcle` is `null`, the default locale is assigned to the `BeanContext` instance.
        `dTime` - The initial state, `true` if in design mode, `false` if runtime.
        `visible` - The initial visibility.
      See Also:
        `Locale.getDefault()`, `Locale.setDefault(java.util.Locale)`

    - #### BeanContextSupport

          public BeanContextSupport(BeanContext peer,
                                    Locale lcle,
                                    boolean dtime)

      Create an instance using the specified Locale and design mode.
      Parameters:
        `peer` - The peer `BeanContext` we are supplying an implementation for, or `null` if this object is its own peer
        `lcle` - The current Locale for this `BeanContext`. If `lcle` is `null`, the default locale is assigned to the `BeanContext` instance.
        `dtime` - The initial state, `true` if in design mode, `false` if runtime.
      See Also:
        `Locale.getDefault()`, `Locale.setDefault(java.util.Locale)`

    - #### BeanContextSupport

          public BeanContextSupport(BeanContext peer,
                                    Locale lcle)

      Create an instance using the specified locale
      Parameters:
        `peer` - The peer BeanContext we are supplying an implementation for, or `null` if this object is its own peer
        `lcle` - The current Locale for this `BeanContext`. If `lcle` is `null`, the default locale is assigned to the `BeanContext` instance.
      See Also:
        `Locale.getDefault()`, `Locale.setDefault(java.util.Locale)`

    - #### BeanContextSupport

          public BeanContextSupport(BeanContext peer)

      Create an instance using with a default locale
      Parameters:
        `peer` - The peer `BeanContext` we are supplying an implementation for, or `null` if this object is its own peer

    - #### BeanContextSupport

          public BeanContextSupport()

      Create an instance that is not a delegate of another object

  - ### Method Detail

    - #### getBeanContextPeer

          public BeanContext getBeanContextPeer()

      Gets the instance of `BeanContext` that this object is providing the implementation for.
      Returns:
        the BeanContext instance

    - #### instantiateChild

          public Object instantiateChild(String beanName)
                                  throws IOException,
                                         ClassNotFoundException

      The instantiateChild method is a convenience hook in BeanContext to simplify the task of instantiating a Bean, nested, into a `BeanContext`.

      The semantics of the beanName parameter are defined by java.beans.Beans.instantiate.

      Specified by:
        `instantiateChild` in interface `BeanContext`
      Parameters:
        `beanName` - the name of the Bean to instantiate within this BeanContext
      Returns:
        the new object
      Throws:
        `IOException` - if there is an I/O error when the bean is being deserialized
        `ClassNotFoundException` - if the class identified by the beanName parameter is not found

    - #### size

          public int size()

      Gets the number of children currently nested in this BeanContext.
      Specified by:
        `size` in interface `Collection`
      Returns:
        number of children

    - #### isEmpty

          public boolean isEmpty()

      Reports whether or not this `BeanContext` is empty. A `BeanContext` is considered empty when it contains zero nested children.
      Specified by:
        `isEmpty` in interface `Collection`
      Returns:
        if there are not children

    - #### contains

          public boolean contains(Object o)

      Determines whether or not the specified object is currently a child of this `BeanContext`.
      Specified by:
        `contains` in interface `Collection`
      Parameters:
        `o` - the Object in question
      Returns:
        if this object is a child

    - #### containsKey

          public boolean containsKey(Object o)

      Determines whether or not the specified object is currently a child of this `BeanContext`.
      Parameters:
        `o` - the Object in question
      Returns:
        if this object is a child

    - #### iterator

          public Iterator iterator()

      Gets all JavaBean or `BeanContext` instances currently nested in this `BeanContext`.
      Specified by:
        `iterator` in interface `Iterable`
      Specified by:
        `iterator` in interface `Collection`
      Returns:
        an `Iterator` of the nested children

    - #### toArray

          public Object[] toArray()

      Gets all JavaBean or `BeanContext` instances currently nested in this BeanContext.
      Specified by:
        `toArray` in interface `Collection`
      Returns:
        an array containing all of the elements in this collection

    - #### toArray

          public Object[] toArray(Object[] arry)

      Gets an array containing all children of this `BeanContext` that match the types contained in arry.
      Specified by:
        `toArray` in interface `Collection`
      Parameters:
        `arry` - The array of object types that are of interest.
      Returns:
        an array of children

    - #### createBCSChild

          protected BeanContextSupport.BCSChild createBCSChild(Object targetChild,
                                                               Object peer)

      Subclasses can override this method to insert their own subclass of Child without having to override add() or the other Collection methods that add children to the set.

      Parameters:
        `targetChild` - the child to create the Child on behalf of
        `peer` - the peer if the tragetChild and the peer are related by an implementation of BeanContextProxy * @return Subtype-specific subclass of Child without overriding collection methods

    - #### add

          public boolean add(Object targetChild)

      Adds/nests a child within this `BeanContext`.

      Invoked as a side effect of java.beans.Beans.instantiate(). If the child object is not valid for adding then this method throws an IllegalStateException.

      Specified by:
        `add` in interface `Collection`
      Parameters:
        `targetChild` - The child objects to nest within this `BeanContext`
      Returns:
        true if the child was added successfully.
      See Also:
        `validatePendingAdd(java.lang.Object)`

    - #### remove

          public boolean remove(Object targetChild)

      Removes a child from this BeanContext. If the child object is not for adding then this method throws an IllegalStateException.
      Specified by:
        `remove` in interface `Collection`
      Parameters:
        `targetChild` - The child objects to remove
      Returns:
        `true` if an element was removed as a result of this call
      See Also:
        `validatePendingRemove(java.lang.Object)`

    - #### remove

          protected boolean remove(Object targetChild,
                                   boolean callChildSetBC)

      internal remove used when removal caused by unexpected `setBeanContext` or by `remove()` invocation.
      Parameters:
        `targetChild` - the JavaBean, BeanContext, or Object to be removed
        `callChildSetBC` - used to indicate that the child should be notified that it is no longer nested in this `BeanContext`.
      Returns:
        whether or not was present before being removed

    - #### containsAll

          public boolean containsAll(Collection c)

      Tests to see if all objects in the specified `Collection` are children of this `BeanContext`.
      Specified by:
        `containsAll` in interface `Collection`
      Parameters:
        `c` - the specified `Collection`
      Returns:
        `true` if all objects in the collection are children of this `BeanContext`, false if not.
      See Also:
        `Collection.contains(Object)`

    - #### addAll

          public boolean addAll(Collection c)

      add Collection to set of Children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
      Specified by:
        `addAll` in interface `Collection`
      Parameters:
        `c` - collection containing elements to be added to this collection
      Returns:
        this implementation unconditionally throws `UnsupportedOperationException`
      Throws:
        `UnsupportedOperationException` - thrown unconditionally by this implementation
      See Also:
        `Collection.add(Object)`

    - #### removeAll

          public boolean removeAll(Collection c)

      remove all specified children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
      Specified by:
        `removeAll` in interface `Collection`
      Parameters:
        `c` - collection containing elements to be removed from this collection
      Returns:
        this implementation unconditionally throws `UnsupportedOperationException`
      Throws:
        `UnsupportedOperationException` - thrown unconditionally by this implementation
      See Also:
        `Collection.remove(Object)`, `Collection.contains(Object)`

    - #### retainAll

          public boolean retainAll(Collection c)

      retain only specified children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
      Specified by:
        `retainAll` in interface `Collection`
      Parameters:
        `c` - collection containing elements to be retained in this collection
      Returns:
        this implementation unconditionally throws `UnsupportedOperationException`
      Throws:
        `UnsupportedOperationException` - thrown unconditionally by this implementation
      See Also:
        `Collection.remove(Object)`, `Collection.contains(Object)`

    - #### clear

          public void clear()

      clear the children (Unsupported) implementations must synchronized on the hierarchy lock and "children" protected field
      Specified by:
        `clear` in interface `Collection`
      Throws:
        `UnsupportedOperationException` - thrown unconditionally by this implementation

    - #### addBeanContextMembershipListener

          public void addBeanContextMembershipListener(BeanContextMembershipListener bcml)

      Adds a BeanContextMembershipListener
      Specified by:
        `addBeanContextMembershipListener` in interface `BeanContext`
      Parameters:
        `bcml` - the BeanContextMembershipListener to add
      Throws:
        `NullPointerException` - if the argument is null

    - #### removeBeanContextMembershipListener

          public void removeBeanContextMembershipListener(BeanContextMembershipListener bcml)

      Removes a BeanContextMembershipListener
      Specified by:
        `removeBeanContextMembershipListener` in interface `BeanContext`
      Parameters:
        `bcml` - the BeanContextMembershipListener to remove
      Throws:
        `NullPointerException` - if the argument is null

    - #### getResourceAsStream

          public InputStream getResourceAsStream(String name,
                                                 BeanContextChild bcc)

      Description copied from interface: `BeanContext`
      Analagous to `java.lang.ClassLoader.getResourceAsStream()`, this method allows a `BeanContext` implementation to interpose behavior between the child `Component` and underlying `ClassLoader`.
      Specified by:
        `getResourceAsStream` in interface `BeanContext`
      Parameters:
        `name` - the name of the resource requested.
        `bcc` - the child object making the request.
      Returns:
        the requested resource as an InputStream
      Throws:
        `NullPointerException` - if the argument is null

    - #### getResource

          public URL getResource(String name,
                                 BeanContextChild bcc)

      Description copied from interface: `BeanContext`
      Analagous to `java.lang.ClassLoader.getResource()`, this method allows a `BeanContext` implementation to interpose behavior between the child `Component` and underlying `ClassLoader`.
      Specified by:
        `getResource` in interface `BeanContext`
      Parameters:
        `name` - the name of the resource requested.
        `bcc` - the child object making the request.
      Returns:
        the requested resource as an InputStream

    - #### setDesignTime

          public void setDesignTime(boolean dTime)

      Sets the new design time value for this `BeanContext`.
      Specified by:
        `setDesignTime` in interface `DesignMode`
      Parameters:
        `dTime` - the new designTime value
      See Also:
        `BeanContext`, `BeanContextMembershipListener`, `PropertyChangeEvent`

    - #### isDesignTime

          public boolean isDesignTime()

      Reports whether or not this object is in currently in design time mode.
      Specified by:
        `isDesignTime` in interface `DesignMode`
      Returns:
        `true` if in design time mode, `false` if not

    - #### setLocale

          public void setLocale(Locale newLocale)
                         throws PropertyVetoException

      Sets the locale of this BeanContext.
      Parameters:
        `newLocale` - the new locale. This method call will have no effect if newLocale is `null`.
      Throws:
        `PropertyVetoException` - if the new value is rejected

    - #### getLocale

          public Locale getLocale()

      Gets the locale for this `BeanContext`.
      Returns:
        the current Locale of the `BeanContext`

    - #### needsGui

          public boolean needsGui()

      This method is typically called from the environment in order to determine if the implementor "needs" a GUI.

      The algorithm used herein tests the BeanContextPeer, and its current children to determine if they are either Containers, Components, or if they implement Visibility and return needsGui() == true.

      Specified by:
        `needsGui` in interface `Visibility`
      Returns:
        `true` if the implementor needs a GUI

    - #### dontUseGui

          public void dontUseGui()

      notify this instance that it may no longer render a GUI.
      Specified by:
        `dontUseGui` in interface `Visibility`

    - #### okToUseGui

          public void okToUseGui()

      Notify this instance that it may now render a GUI
      Specified by:
        `okToUseGui` in interface `Visibility`

    - #### avoidingGui

          public boolean avoidingGui()

      Used to determine if the `BeanContext` child is avoiding using its GUI.
      Specified by:
        `avoidingGui` in interface `Visibility`
      Returns:
        is this instance avoiding using its GUI?
      See Also:
        `Visibility`

    - #### isSerializing

          public boolean isSerializing()

      Is this `BeanContext` in the process of being serialized?
      Returns:
        if this `BeanContext` is currently being serialized

    - #### bcsChildren

          protected Iterator bcsChildren()

      Returns an iterator of all children of this `BeanContext`.
      Returns:
        an iterator for all the current BCSChild values

    - #### bcsPreSerializationHook

          protected void bcsPreSerializationHook(ObjectOutputStream oos)
                                          throws IOException

      called by writeObject after defaultWriteObject() but prior to serialization of currently serializable children. This method may be overridden by subclasses to perform custom serialization of their state prior to this superclass serializing the children. This method should not however be used by subclasses to replace their own implementation (if any) of writeObject().
      Parameters:
        `oos` - the `ObjectOutputStream` to use during serialization
      Throws:
        `IOException` - if serialization failed

    - #### bcsPreDeserializationHook

          protected void bcsPreDeserializationHook(ObjectInputStream ois)
                                            throws IOException,
                                                   ClassNotFoundException

      called by readObject after defaultReadObject() but prior to deserialization of any children. This method may be overridden by subclasses to perform custom deserialization of their state prior to this superclass deserializing the children. This method should not however be used by subclasses to replace their own implementation (if any) of readObject().
      Parameters:
        `ois` - the `ObjectInputStream` to use during deserialization
      Throws:
        `IOException` - if deserialization failed
        `ClassNotFoundException` - if needed classes are not found

    - #### childDeserializedHook

          protected void childDeserializedHook(Object child,
                                               BeanContextSupport.BCSChild bcsc)

      Called by readObject with the newly deserialized child and BCSChild.
      Parameters:
        `child` - the newly deserialized child
        `bcsc` - the newly deserialized BCSChild

    - #### serialize

          protected final void serialize(ObjectOutputStream oos,
                                         Collection coll)
                                  throws IOException

      Used by writeObject to serialize a Collection.
      Parameters:
        `oos` - the `ObjectOutputStream` to use during serialization
        `coll` - the `Collection` to serialize
      Throws:
        `IOException` - if serialization failed

    - #### deserialize

          protected final void deserialize(ObjectInputStream ois,
                                           Collection coll)
                                    throws IOException,
                                           ClassNotFoundException

      used by readObject to deserialize a collection.
      Parameters:
        `ois` - the ObjectInputStream to use
        `coll` - the Collection
      Throws:
        `IOException` - if deserialization failed
        `ClassNotFoundException` - if needed classes are not found

    - #### writeChildren

          public final void writeChildren(ObjectOutputStream oos)
                                   throws IOException

      Used to serialize all children of this `BeanContext`.
      Parameters:
        `oos` - the `ObjectOutputStream` to use during serialization
      Throws:
        `IOException` - if serialization failed

    - #### readChildren

          public final void readChildren(ObjectInputStream ois)
                                  throws IOException,
                                         ClassNotFoundException

      When an instance of this class is used as a delegate for the implementation of the BeanContext protocols (and its subprotocols) there exists a 'chicken and egg' problem during deserialization
      Parameters:
        `ois` - the ObjectInputStream to use
      Throws:
        `IOException` - if deserialization failed
        `ClassNotFoundException` - if needed classes are not found

    - #### vetoableChange

          public void vetoableChange(PropertyChangeEvent pce)
                              throws PropertyVetoException

      subclasses may envelope to monitor veto child property changes.
      Specified by:
        `vetoableChange` in interface `VetoableChangeListener`
      Parameters:
        `pce` - a `PropertyChangeEvent` object describing the event source and the property that has changed.
      Throws:
        `PropertyVetoException` - if the recipient wishes the property change to be rolled back.

    - #### propertyChange

          public void propertyChange(PropertyChangeEvent pce)

      subclasses may envelope to monitor child property changes.
      Specified by:
        `propertyChange` in interface `PropertyChangeListener`
      Parameters:
        `pce` - A PropertyChangeEvent object describing the event source and the property that has changed.

    - #### validatePendingAdd

          protected boolean validatePendingAdd(Object targetChild)

      Subclasses of this class may override, or envelope, this method to add validation behavior for the BeanContext to examine child objects immediately prior to their being added to the BeanContext.

      Parameters:
        `targetChild` - the child to create the Child on behalf of
      Returns:
        true iff the child may be added to this BeanContext, otherwise false.

    - #### validatePendingRemove

          protected boolean validatePendingRemove(Object targetChild)

      Subclasses of this class may override, or envelope, this method to add validation behavior for the BeanContext to examine child objects immediately prior to their being removed from the BeanContext.

      Parameters:
        `targetChild` - the child to create the Child on behalf of
      Returns:
        true iff the child may be removed from this BeanContext, otherwise false.

    - #### childJustAddedHook

          protected void childJustAddedHook(Object child,
                                            BeanContextSupport.BCSChild bcsc)

      subclasses may override this method to simply extend add() semantics after the child has been added and before the event notification has occurred. The method is called with the child synchronized.
      Parameters:
        `child` - the child
        `bcsc` - the BCSChild

    - #### childJustRemovedHook

          protected void childJustRemovedHook(Object child,
                                              BeanContextSupport.BCSChild bcsc)

      subclasses may override this method to simply extend remove() semantics after the child has been removed and before the event notification has occurred. The method is called with the child synchronized.
      Parameters:
        `child` - the child
        `bcsc` - the BCSChild

    - #### getChildVisibility

          protected static final Visibility getChildVisibility(Object child)

      Gets the Component (if any) associated with the specified child.
      Parameters:
        `child` - the specified child
      Returns:
        the Component (if any) associated with the specified child.

    - #### getChildSerializable

          protected static final Serializable getChildSerializable(Object child)

      Gets the Serializable (if any) associated with the specified Child
      Parameters:
        `child` - the specified child
      Returns:
        the Serializable (if any) associated with the specified Child

    - #### getChildPropertyChangeListener

          protected static final PropertyChangeListener getChildPropertyChangeListener(Object child)

      Gets the PropertyChangeListener (if any) of the specified child
      Parameters:
        `child` - the specified child
      Returns:
        the PropertyChangeListener (if any) of the specified child

    - #### getChildVetoableChangeListener

          protected static final VetoableChangeListener getChildVetoableChangeListener(Object child)

      Gets the VetoableChangeListener (if any) of the specified child
      Parameters:
        `child` - the specified child
      Returns:
        the VetoableChangeListener (if any) of the specified child

    - #### getChildBeanContextMembershipListener

          protected static final BeanContextMembershipListener getChildBeanContextMembershipListener(Object child)

      Gets the BeanContextMembershipListener (if any) of the specified child
      Parameters:
        `child` - the specified child
      Returns:
        the BeanContextMembershipListener (if any) of the specified child

    - #### getChildBeanContextChild

          protected static final BeanContextChild getChildBeanContextChild(Object child)

      Gets the BeanContextChild (if any) of the specified child
      Parameters:
        `child` - the specified child
      Returns:
        the BeanContextChild (if any) of the specified child
      Throws:
        `IllegalArgumentException` - if child implements both BeanContextChild and BeanContextProxy

    - #### fireChildrenAdded

          protected final void fireChildrenAdded(BeanContextMembershipEvent bcme)

      Fire a BeanContextshipEvent on the BeanContextMembershipListener interface
      Parameters:
        `bcme` - the event to fire

    - #### fireChildrenRemoved

          protected final void fireChildrenRemoved(BeanContextMembershipEvent bcme)

      Fire a BeanContextshipEvent on the BeanContextMembershipListener interface
      Parameters:
        `bcme` - the event to fire

    - #### initialize

          protected void initialize()

      protected method called from constructor and readObject to initialize transient state of BeanContextSupport instance. This class uses this method to instantiate inner class listeners used to monitor PropertyChange and VetoableChange events on children. subclasses may envelope this method to add their own initialization behavior

    - #### copyChildren

          protected final Object[] copyChildren()

      Gets a copy of the this BeanContext's children.
      Returns:
        a copy of the current nested children

    - #### classEquals

          protected static final boolean classEquals(Class first,
                                                     Class second)

      Tests to see if two class objects, or their names are equal.
      Parameters:
        `first` - the first object
        `second` - the second object
      Returns:
        true if equal, false if not

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