ItemCaptionGenerator (vaadin-all 8.27.7 API)

Type Parameters:

T - item type

All Superinterfaces:

Function<T,String>, Serializable, SerializableFunction<T,String>

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 ItemCaptionGenerator<T>
extends SerializableFunction<T,String>
```
ItemCaptionGenerator can be used to customize the string shown to the user for an item.

Since:

8.0

Author:

Vaadin Ltd

See Also:

ComboBox.setItemCaptionGenerator(ItemCaptionGenerator)

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String apply(T item)
  Gets a caption for the item.
  - Methods inherited from interface java.util.function.Function
    andThen, compose

- Method Detail
  - apply
```
String apply(T item)
```
    Gets a caption for the item.
    
    Specified by:
    
    apply in interface Function<T,String>
    
    Parameters:
    
    item - the item to get caption for
    
    Returns:
    
    the caption of the item; null will be shown as an empty string