optiontagtei.java

21天精通Java,这是一本英文书

package web;

import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;

public class OptionTagTEI extends TagExtraInfo {
   public boolean isValid(TagData data) {
      Object selected = data.getAttribute("selected");
      Object def = data.getAttribute("default");
      if (def!=null && selected!=null)
          return false;
      else
          return true;
   }
}