| Package | Description | 
|---|---|
| net.sf.rubycollect4j | 
| Modifier and Type | Method and Description | 
|---|---|
RubyDate.DateShifter | 
RubyDate.add(int interval)
Increases an interval of time to a date by the  
RubyDate.DateShifter. | 
RubyDate.DateShifter | 
RubyDate.minus(int interval)
Decreases an interval of time to a date by the  
RubyDate.DateShifter. |