Java Module java.desktop Package java.beans Interface Visibility（JDK11）

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All Known Subinterfaces:

BeanContext, BeanContextServices

All Known Implementing Classes:

BeanContextServicesSupport, BeanContextSupport
```
public interface Visibility
```
Under some circumstances a bean may be run on servers where a GUI is not available. This interface can be used to query a bean to determine whether it absolutely needs a gui, and to advise the bean whether a GUI is available.
This interface is for expert developers, and is not needed for normal simple beans. To avoid confusing end-users we avoid using getXXX setXXX design patterns for these methods.

Since:

1.1

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`avoidingGui()`	Determines whether this bean is avoiding using a GUI.
`void`	`dontUseGui()`	This method instructs the bean that it should not use the Gui.
`boolean`	`needsGui()`	Determines whether this bean needs a GUI.
`void`	`okToUseGui()`	This method instructs the bean that it is OK to use the Gui.

- Method Detail
  - needsGui
```
boolean needsGui()
```
    Determines whether this bean needs a GUI.
    
    Returns:
    
    True if the bean absolutely needs a GUI available in order to get its work done.
  - dontUseGui
```
void dontUseGui()
```
    This method instructs the bean that it should not use the Gui.
  - okToUseGui
```
void okToUseGui()
```
    This method instructs the bean that it is OK to use the Gui.
  - avoidingGui
```
boolean avoidingGui()
```
    Determines whether this bean is avoiding using a GUI.
    
    Returns:
    
    true if the bean is currently avoiding use of the Gui. e.g. due to a call on dontUseGui().

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