FeatureDescriptor

AI-generated Key Takeaways

• FeatureDescriptor is a common base class for Descriptors and provides methods for describing features of Java Beans.

• It allows setting and retrieving properties such as display name, short description, expert/hidden/preferred status, and custom attributes.

• Subclasses like BeanDescriptor, EventSetDescriptor, MethodDescriptor, ParameterDescriptor, and PropertyDescriptor provide specific functionalities for different feature types.

• Developers can use FeatureDescriptor and its subclasses to access and manipulate information about Java Bean components.

public class FeatureDescriptor extends Object

Known Direct Subclasses BeanDescriptor, EventSetDescriptor, MethodDescriptor, ParameterDescriptor, PropertyDescriptor BeanDescriptor Describes a bean's global information.  EventSetDescriptor   MethodDescriptor Describes a bean's method.  ParameterDescriptor   PropertyDescriptor Describes one Java Bean property.

Known Indirect Subclasses IndexedPropertyDescriptor IndexedPropertyDescriptor

Common base class for Descriptors.

Public Constructor Summary

FeatureDescriptor() Constructs an instance.

Public Method Summary

Enumeration<String>	attributeNames() Enumerates the attribute names.
String	getDisplayName() Gets the display name or getName() if not set.
String	getName() Gets the name.
String	getShortDescription() Gets the short description or getDisplayName() if not set.
Object	getValue(String attributeName) Gets the value associated with the named attribute.
boolean	isExpert() Indicates if this feature is an expert feature.
boolean	isHidden() Indicates if this feature is hidden.
boolean	isPreferred() Indicates if this feature is preferred.
void	setDisplayName(String displayName) Sets the display name.
void	setExpert(boolean expert) Sets the expert indicator.
void	setHidden(boolean hidden) Sets the hidden indicator.
void	setName(String name) Sets the name.
void	setPreferred(boolean preferred) Sets the preferred indicator.
void	setShortDescription(String text) Sets the short description.
void	setValue(String attributeName, Object value) Sets the value for the named attribute.

Inherited Method Summary

From class java.lang.Object

Object	clone() Creates and returns a copy of this Object.
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of Class that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.

Public Constructors

public FeatureDescriptor ()

Constructs an instance.

Public Methods

public Enumeration<String> attributeNames ()

Enumerates the attribute names.

Returns

• An instance of Enumeration.

public String getDisplayName ()

Gets the display name or getName() if not set.

Returns

• The display name.

public String getName ()

Gets the name.

Returns

• The name.

public String getShortDescription ()

Gets the short description or getDisplayName() if not set.

Returns

• The description.

public Object getValue (String attributeName)

Gets the value associated with the named attribute.

Parameters

attributeName	The name of the attribute to get a value for.

Returns

• The attribute's value.

public boolean isExpert ()

Indicates if this feature is an expert feature.

Returns

• true if hidden, false otherwise.

public boolean isHidden ()

Indicates if this feature is hidden.

Returns

• true if hidden, false otherwise.

public boolean isPreferred ()

Indicates if this feature is preferred.

Returns

• true if preferred, false otherwise.

public void setDisplayName (String displayName)

Sets the display name.

Parameters

displayName	The display name to set.

public void setExpert (boolean expert)

Sets the expert indicator.

Parameters

expert	true if expert, false otherwise.

public void setHidden (boolean hidden)

Sets the hidden indicator.

Parameters

hidden	true if hidden, false otherwise.

public void setName (String name)

Sets the name.

Parameters

name	The name to set.

public void setPreferred (boolean preferred)

Sets the preferred indicator.

Parameters

preferred	true if preferred, false otherwise.

public void setShortDescription (String text)

Sets the short description.

Parameters

text	The description to set.

public void setValue (String attributeName, Object value)

Sets the value for the named attribute.

Parameters

attributeName	The name of the attribute to set a value with.
value	The value to set.