Preference (SNAP Desktop API)

```
@Documented
@Retention(RUNTIME)
@Target(FIELD)
public @interface Preference
```
Annotation for user preferences. Use is mandatory if preferences are supplied via a bean, see DefaultConfigController.createPropertySet() and DefaultConfigController.createPropertySet(Object).

See Also:

DefaultConfigController

Required Element Summary

Required Elements
Modifier and Type Required Element Description

String key

String label

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`String`	`config`
`String`	`description`	Description text (used for tooltips).
`String`	`interval`	Gets the valid interval for numeric parameters, e.g.
`Class<? extends Validator>`	`validatorClass`
`String[]`	`valueSet`

- Element Detail
  - label
```
String label
```
    Returns:
    
    The label of the property. Must not be empty.
- - key
```
String key
```
    Returns:
    
    The property key. Must not be empty.
- - config
```
String config
```
    Returns:
    
    The configuration name. If not set, the NetBeans preferences are used, otherwise preferences from a named configuration are used (Config.instance(config).preferences()).
    
    Default:
    
    ""
- - valueSet
```
String[] valueSet
```
    Returns:
    
    The set of allowed values.
    
    Default:
    
    {}
- - interval
```
String interval
```
    Gets the valid interval for numeric parameters, e.g. "[10,20)": in the range 10 (inclusive) to 20 (exclusive).
    
    Returns:
    
    The valid interval. Defaults to empty string (= not set).
    
    Default:
    
    ""
- - description
```
String description
```
    Description text (used for tooltips).
    
    Default:
    
    ""
- - validatorClass
```
Class<? extends Validator> validatorClass
```
    Returns:
    
    The validator class.
    
    Default:
    
    org.esa.snap.rcp.preferences.Preference.NullValidator.class