import org.apache.wicket.extensions.markup.html.form.select.IOptionRenderer; //导入依赖的package包/类
public static final Comparator<Object> getOptionRendererComparator(final Collator collator, final IOptionRenderer renderer){
	return new Comparator<Object>(){
		public int compare(Object o1, Object o2) {
			return collator.compare(
					renderer.getDisplayValue(o1),
					renderer.getDisplayValue(o2)
					);
		}		
	};
}
 

import org.apache.wicket.extensions.markup.html.form.select.IOptionRenderer; //导入依赖的package包/类
/**
 * 
 * @param wicketId
 * @param selections
 * @return
 */
private SelectOptions<String> newSelectOptions(String wicketId, final List<String> selections){
	
//	IModel<List<String>> model = new Model<List<String>>();
	
	
	SelectOptions<String> selectOptions = new SelectOptions<>(
               wicketId,
               Model.ofList(selections),
               new IOptionRenderer<String>() {
                   private static final long serialVersionUID = 1L;

                   @Override
                   public String getDisplayValue(String object) {
                       return object;
                   }

                   @Override
                   public IModel<String> getModel(String value) {
                       return new Model<>(value);
                   }
               }
       );
	selectOptions.setRecreateChoices(true);
	selectOptions.setOutputMarkupId(true);
	
	return selectOptions;
}
 

import org.apache.wicket.extensions.markup.html.form.select.IOptionRenderer; //导入依赖的package包/类
/**
 * 
 * @param wicketId
 * @param selections
 * @return
 */
private SelectOptions<String> newSelectOptions(String wicketId, final List<String> selections){

	//	IModel<List<String>> model = new Model<List<String>>();


	SelectOptions<String> selectOptions = new SelectOptions<>(
               wicketId,
               Model.ofList(selections),
               new IOptionRenderer<String>() {
                   private static final long serialVersionUID = 1L;

                   @Override
                   public String getDisplayValue(String object) {
                       return object;
                   }

                   @Override
                   public IModel<String> getModel(String value) {
                       return new Model<>(value);
                   }
               }
       );
	selectOptions.setRecreateChoices(true);
	selectOptions.setOutputMarkupId(true);

	return selectOptions;
}
 

import org.apache.wicket.extensions.markup.html.form.select.IOptionRenderer; //导入依赖的package包/类
/**
 * @param list
 * @param renderer
 * @return this for chaining.
 */
public SelectPanel<T> addOrReplaceOptions(final List<T> list, final IOptionRenderer<T> renderer) {
  final SelectOptions<T> options = new SelectOptions<T>(OPTIONS_WICKET_ID, list, renderer);
  select.addOrReplace(options);
  return this;
}