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Class java.beans.PropertyDescriptor

java.lang.Object
   |
   +----java.beans.FeatureDescriptor
           |
           +----java.beans.PropertyDescriptor

public class PropertyDescriptor

extends FeatureDescriptor

PropertyDescriptor(String, Class)

Constructs a PropertyDescriptor for a property that follows the standard Java convention by having getFoo and setFoo accessor methods.

PropertyDescriptor(String, Class, String, String)

This constructor takes the name of a simple property, and method names for reading and writing the property.

PropertyDescriptor(String, Method, Method)

This constructor takes the name of a simple property, and Method objects for reading and writing the property.

getPropertyEditorClass()

getPropertyType()

getReadMethod()

getWriteMethod()

isBound()

Updates to "bound" properties will cause a "PropertyChange" event to get fired when the property is changed.

isConstrained()

Attempted updates to "Constrained" properties will cause a "VetoableChange" event to get fired when the property is changed.

setBound(boolean)

Updates to "bound" properties will cause a "PropertyChange" event to get fired when the property is changed.

setConstrained(boolean)

Attempted updates to "Constrained" properties will cause a "VetoableChange" event to get fired when the property is changed.

setPropertyEditorClass(Class)

Normally PropertyEditors will be found using the PropertyEditorManager.

    method PropertyDescriptor(propertyName=String, -
                              beanClass=Class) public Signals IntrospectionException

Constructs a PropertyDescriptor for a property that follows the standard Java convention by having getFoo and setFoo accessor methods. Thus if the argument name is "fred", it will assume that the reader method is "getFred" and the writer method is "setFred". Note that the property name should start with a lower case character, which will be capitalized in the method names.

Parameters:

propertyName - The programmatic name of the property.

beanClass - The Class object for the target bean. For example sun.beans.OurButton.class.

Throws: IntrospectionException

if an exception occurs during introspection.

    method PropertyDescriptor(propertyName=String, -
                              beanClass=Class, -
                              getterName=String, -
                              setterName=String) public Signals IntrospectionException

This constructor takes the name of a simple property, and method names for reading and writing the property.

Parameters:

propertyName - The programmatic name of the property.

beanClass - The Class object for the target bean. For example sun.beans.OurButton.class.

getterName - The name of the method used for reading the property value. May be null if the property is write-only.

setterName - The name of the method used for writing the property value. May be null if the property is read-only.

Throws: IntrospectionException

if an exception occurs during introspection.

    method PropertyDescriptor(propertyName=String, -
                              getter=Method, -
                              setter=Method) public Signals IntrospectionException

This constructor takes the name of a simple property, and Method objects for reading and writing the property.

Parameters:

propertyName - The programmatic name of the property.

getter - The method used for reading the property value. May be null if the property is write-only.

setter - The method used for writing the property value. May be null if the property is read-only.

Throws: IntrospectionException

if an exception occurs during introspection.

    method getPropertyType() returns Class public     

Returns:

The Java type info for the property. Note that the "Class" object may describe a built-in Java type such as "int". The result may be "null" if this is an indexed property that does not support non-indexed access.

This is the type that will be returned by the ReadMethod.

    method getReadMethod() returns Method public     

Returns:

The method that should be used to read the property value. May return null if the property can't be read.

    method getWriteMethod() returns Method public     

Returns:

The method that should be used to write the property value. May return null if the property can't be written.

    method isBound() returns boolean public     

Updates to "bound" properties will cause a "PropertyChange" event to get fired when the property is changed.

Returns:

True if this is a bound property.

    method setBound(bound=boolean)  public     

Updates to "bound" properties will cause a "PropertyChange" event to get fired when the property is changed.

Parameters:

bound - True if this is a bound property.

    method isConstrained() returns boolean public     

Attempted updates to "Constrained" properties will cause a "VetoableChange" event to get fired when the property is changed.

Returns:

True if this is a constrained property.

    method setConstrained(constrained=boolean)  public     

Attempted updates to "Constrained" properties will cause a "VetoableChange" event to get fired when the property is changed.

Parameters:

constrained - True if this is a constrained property.

    method setPropertyEditorClass(propertyEditorClass=Class)  public     

Normally PropertyEditors will be found using the PropertyEditorManager. However if for some reason you want to associate a particular PropertyEditor with a given property, then you can do it with this method.

Parameters:

propertyEditorClass - The Class for the desired PropertyEditor.

    method getPropertyEditorClass() returns Class public     

Returns:

Any explicit PropertyEditor Class that has been registered for this property. Normally this will return "null", indicating that no special editor has been registered, so the PropertyEditorManager should be used to locate a suitable PropertyEditor.

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