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Editorial Team
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Asked: 2026-05-11T23:26:28+00:00

I’m a newbie on Java EE and got a problem that I don’t understand

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I’m a newbie on Java EE and got a problem that I don’t understand why it’s happening.
Here is my problem :

I can’t access a JavaBean using <jsp:getProperty> which is created in a scriptlet in the same page.It’s throwing the below exception :

Attempted a bean operation on a null object.

Here is my bean and jsp page :

package com.webProject3.beans;

public class User implements java.io.Serializable {

private static final long serialVersionUID = 1209333714609490385L;
private int id;
private String lastName;
private String firstName;

public User(){

}

public void setId(int id) {
    this.id = id;
}
public int getId() {
    return id;
}
public void setLastName(String lastName) {
    this.lastName = lastName;
}
public String getLastName() {
    return lastName;
}
public void setFirstName(String firstName) {
    this.firstName = firstName;
}
public String getFirstName() {
    return firstName;
}

}

<body>  
  <%  
  com.webProject3.beans.User requestedUser = new com.webProject3.beans.User();  
  requestedUser.setFirstName("Peter");  
  requestedUser.setLastName("Petrelli");  
  %>  

 <p><jsp:getProperty name="requestedUser" property="firstName"></jsp:getProperty></p>  
</body>
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1 Answer

  1. Editorial Team

    Your problem is that you’re trying to use a variable that is out of scope. You need to use the variable in the same scope as you’ve instantiated.

    try this:

    <body>
<jsp:useBean id="user" class="com.webProject3.beans.User"/>
<%
  requestedUser.setFirstName("Peter");  
  requestedUser.setLastName("Petrelli"); 
%>

    Then you access using EL notation as follows:

    ${user.firstName}
${user.lastName}

    etc…

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