MapChangeListener (Java SE 9 & JDK 9 )

Type Parameters:

K - the key element type

V - the value element type

All Known Implementing Classes:

WeakMapChangeListener

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface MapChangeListener<K,V>
```
Interface that receives notifications of changes to an ObservableMap.

Since:

JavaFX 2.0

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class MapChangeListener.Change<K,V>
An elementary change done to an ObservableMap.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onChanged(MapChangeListener.Change<? extends K,? extends V> change)`	Called after a change has been made to an ObservableMap.

- Method Detail
  - onChanged
```
void onChanged(MapChangeListener.Change<? extends K,? extends V> change)
```
    Called after a change has been made to an ObservableMap. This method is called on every elementary change (put/remove) once. This means, complex changes like keySet().removeAll(Collection) or clear() may result in more than one call of onChanged method.
    
    Parameters:
    
    change - the change that was made