KeyListener (Eclipse Platform API Specification)

All Superinterfaces:

EventListener, SWTEventListener

All Known Implementing Classes:

AnnotationBarHoverManager.Closer, ContentAssistant.AutoAssistListener, HyperlinkManager, KeyAdapter, PaintManager
```
public interface KeyListener
extends SWTEventListener
```
Classes which implement this interface provide methods that deal with the events that are generated as keys are pressed on the system keyboard.
After creating an instance of a class that implements this interface it can be added to a control using the addKeyListener method and removed using the removeKeyListener method. When a key is pressed or released, the appropriate method will be invoked.

See Also:

KeyAdapter, KeyEvent

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`keyPressed(KeyEvent e)`	Sent when a key is pressed on the system keyboard.
`static KeyListener`	`keyPressedAdapter(Consumer<KeyEvent> c)`	Static helper method to create a `KeyListener` for the `keyPressed(KeyEvent e)`) method with a lambda expression.
`void`	`keyReleased(KeyEvent e)`	Sent when a key is released on the system keyboard.
`static KeyListener`	`keyReleasedAdapter(Consumer<KeyEvent> c)`	Static helper method to create a `KeyListener` for the `keyReleased(KeyEvent e)`) method with a lambda expression.

- Method Detail
  - keyPressed
```
void keyPressed(KeyEvent e)
```
    Sent when a key is pressed on the system keyboard.
    
    Parameters:
    
    e - an event containing information about the key press
  - keyReleased
```
void keyReleased(KeyEvent e)
```
    Sent when a key is released on the system keyboard.
    
    Parameters:
    
    e - an event containing information about the key release
  - keyPressedAdapter
```
static KeyListener keyPressedAdapter(Consumer<KeyEvent> c)
```
    Static helper method to create a KeyListener for the keyPressed(KeyEvent e)) method with a lambda expression.
    
    Parameters:
    
    c - the consumer of the event
    
    Returns:
    
    KeyListener
    
    Since:
    
    3.106
  - keyReleasedAdapter
```
static KeyListener keyReleasedAdapter(Consumer<KeyEvent> c)
```
    Static helper method to create a KeyListener for the keyReleased(KeyEvent e)) method with a lambda expression.
    
    Parameters:
    
    c - the consumer of the event
    
    Returns:
    
    KeyListener
    
    Since:
    
    3.106