public boolean isNumeric(){
  final Class c=getColumnClass();
  return c.equals(Integer.class) || c.equals(Float.class) || c.equals(Long.class)|| c.equals(BigDecimal.class);
}

public boolean isNumeric ( ) { final Class c = getColumnClass ( ) ; return c . equals ( Integer . class ) || c . equals ( Float . class ) || c . equals ( Long . class ) || c . equals ( BigDecimal . class ) ; }
checks if is numeric .
