code: public void setColumnClassName(final String columnClassName) throws ClassNotFoundException {
  		if (columnClassName.equals("byte[]")) {
  			setColumnClass(Object.class);
  		} else {
  			setColumnClass(Class.forName(columnClassName));
  		}
  		this.columnClassName = columnClassName;
  	}
docs: Sets the column class name.
  
  @param columnClassName the new column class name
  @throws ClassNotFoundException the class not found exception