ItemKey (JFreeChart as OSGI-bundle 1.5.6 API)

All Known Implementing Classes:

KeyedValues2DItemKey, KeyedValuesItemKey, XYItemKey
```
public interface ItemKey
```
A key that references a single data item in a dataset.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String toJSONString()
  Returns a JSON formatted string representing the key.

- Method Detail
  - toJSONString
```
String toJSONString()
```
    Returns a JSON formatted string representing the key.
    
    Returns:
    
    A JSON formatted string.