ArgumentChoice (argparse4j 0.9.0 API)

All Known Implementing Classes:

CollectionArgumentChoice, RangeArgumentChoice
```
public interface ArgumentChoice
```
This interface defines simple data validation method.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`contains(Object val)`	Returns `true` iff `val` is valid choice according to this object's constraint.
`String`	`textualFormat()`	Return textual representation of this choice.

- Method Detail
  - contains
```
boolean contains(Object val)
```
    Returns true iff val is valid choice according to this object's constraint.
    
    If the objects derived from RuntimeException are thrown because of invalid input from command line, subclass must catch these exceptions and return false.
    
    Parameters:
    
    val - The attribute value.
    
    Returns:
    
    true or false.
  - textualFormat
```
String textualFormat()
```
    Return textual representation of this choice.
    
    This string will be used in help and error messages.
    
    Returns:
    
    The textual representation of this choice.