PropertyEditorManager (Java Platform SE 8 )
Keywords: java.beans.PropertyEditorManager class
Date: 2015-11-19

java.beans

## Class PropertyEditorManager

- java.lang.Object
- - java.beans.PropertyEditorManager

-     public class PropertyEditorManager
      extends Object

  The PropertyEditorManager can be used to locate a property editor for any given type name. This property editor must support the java.beans.PropertyEditor interface for editing a given object.

  The PropertyEditorManager uses three techniques for locating an editor for a given type. First, it provides a registerEditor method to allow an editor to be specifically registered for a given type. Second it tries to locate a suitable class by adding "Editor" to the full qualified classname of the given type (e.g. "foo.bah.FozEditor"). Finally it takes the simple classname (without the package name) adds "Editor" to it and looks in a search-path of packages for a matching class.

  So for an input class foo.bah.Fred, the PropertyEditorManager would first look in its tables to see if an editor had been registered for foo.bah.Fred and if so use that. Then it will look for a foo.bah.FredEditor class. Then it will look for (say) standardEditorsPackage.FredEditor class.

  Default PropertyEditors will be provided for the Java primitive types "boolean", "byte", "short", "int", "long", "float", and "double"; and for the classes java.lang.String. java.awt.Color, and java.awt.Font.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `PropertyEditorManager()`

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static PropertyEditor` | `findEditor(Class<?> targetType)` Locate a value editor for a given target type.
    `static String[]` | `getEditorSearchPath()` Gets the package names that will be searched for property editors.
    `static void` | `registerEditor(Class<?> targetType, Class<?> editorClass)` Registers an editor class to edit values of the given target class.
    `static void` | `setEditorSearchPath(String[] path)` Change the list of package names that will be used for finding property editors.

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

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

- - ### Constructor Detail

    - #### PropertyEditorManager

          public PropertyEditorManager()

  - ### Method Detail

    - #### registerEditor

          public static void registerEditor(Class<?> targetType,
                                            Class<?> editorClass)

      Registers an editor class to edit values of the given target class. If the editor class is `null`, then any existing definition will be removed. Thus this method can be used to cancel the registration. The registration is canceled automatically if either the target or editor class is unloaded.

      If there is a security manager, its `checkPropertiesAccess` method is called. This could result in a SecurityException.

      Parameters:
        `targetType` - the class object of the type to be edited
        `editorClass` - the class object of the editor class
      Throws:
        `SecurityException` - if a security manager exists and its `checkPropertiesAccess` method doesn't allow setting of system properties
      See Also:
        `SecurityManager.checkPropertiesAccess()`

    - #### findEditor

          public static PropertyEditor findEditor(Class<?> targetType)

      Locate a value editor for a given target type.
      Parameters:
        `targetType` - The Class object for the type to be edited
      Returns:
        An editor object for the given target class. The result is null if no suitable editor can be found.

    - #### getEditorSearchPath

          public static String[] getEditorSearchPath()

      Gets the package names that will be searched for property editors.
      Returns:
        The array of package names that will be searched in order to find property editors.

        The default value for this array is implementation-dependent, e.g. Sun implementation initially sets to {"sun.beans.editors"}.

    - #### setEditorSearchPath

          public static void setEditorSearchPath(String[] path)

      Change the list of package names that will be used for finding property editors.

      First, if there is a security manager, its `checkPropertiesAccess` method is called. This could result in a SecurityException.

      Parameters:
        `path` - Array of package names.
      Throws:
        `SecurityException` - if a security manager exists and its `checkPropertiesAccess` method doesn't allow setting of system properties.
      See Also:
        `SecurityManager.checkPropertiesAccess()`

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