question: @ SuppressWarnings ( "unchecked" ) public DummyData ( int cols , int rows , Comparable < ? > value ) { value . getClass ( ) ; this . cols = cols ; this . rows = rows ; this . value = value ; Class < ? extends Comparable < ? > > [ ] types = new Class [ cols ] ; Arrays . fill ( types , value . getClass ( ) ) ; setColumnTypes ( types ) ; }
target:  Creates a new instance with the specified number of columns and rows, which are filled all over with the same specified value.