Question

Below is the code I wrote in body

    <% List<UserInfo> userInfoList = new ArrayList<UserInfo>();
    UserInfo userInfo = new UserInfo();
    userInfoList = new CRUDOps().retrieveUserDataList();
    pageContext.setAttribute("userInfoList", userInfoList);%>

Below is the code I wrote in div

    <c:forEach var="userInfo" items="${userInfoList}">
    <input type="radio" name="buyer"  value="hhhh">${userInfo.get(0).getFirstName()}/><br /> 
    <c:forEach>

Above code , have to display first and last name from UserInfo table … UserInfoList contains UserInfo object and UserInfo has first and last names. So, using userInfoList with index value as “0” calling the getFirstName defined in POJO.

The error that I am getting is

org.apache.jasper.JasperException: /requestorGroup.jsp(63,59) The function get must be used with a prefix when a default namespace is not specified

Answer 1

If UserInfo has a first name and a last name, and userInfo is of type UserInfo, calling get(0) on it makes no sense: it’s not a list, and it doesn’t have any first element. It has a first name and a last name.

You simply need

<c:forEach var="userInfo" items="${userInfoList}">
    <input type="radio" name="buyer"  value="hhhh">${userInfo.firstName}/><br /> 
<c:forEach>

The JSP expression language (EL) accesses properties via getters. So you shouldn’t use the getter, but simply the name of the property: firstName.

You should also avoid scriptlets in JSP, and put the code which gets data from the database into a servlet instead. Moreover, two out of the 4 lines are completely unnecessary. The code should be reduced to:

List<UserInfo> userInfoList = new CRUDOps().retrieveUserDataList();
pageContext.setAttribute("userInfoList", userInfoList);