Pass parameter to a java bean

am new to jsp.
Nevertheless i have a table in a jspf with characters A-Z which are command links.
Here is the code
<%-- any content can be specified here e.g.: --%>
<body>
<table width="600" border="0">
    <TR>
       <%
        for(char i='A';i<='Z';i++)
            out.println("<TD><a href=\"x\">"+i+"</a></TD>");
         %>
    </TR>
</table>
</body>once i click on any of those letters, it should open a jsf href="x"
the backing bean should for the jsf should know the character i clicked
since i will use it in a query. the problem is how to ppass it from a command
link. for inputText, i have no problem.
assume i have this backing bean with the string searchStr to hold the value of the character i clicked, what should i add.
public class OfficerController1 {
    /** Creates a new instance of OfficerController */
    public OfficerController1() {
    private String searchStr;
    public DataModel getOfficers() {
        EntityManager em = getEntityManager();
        try{
            Query q = em.createQuery("select object(o) from Officer as o where o.fullName like '"+searchStr+"%'");
            q.setMaxResults(batchSize);
            q.setFirstResult(firstItem);
            model = new ListDataModel(q.getResultList());
            return model;
        } finally {
            em.close();
}

am glad this is my 100th post. means i have a passion for java. i envy guys
i see with 30000 post. seems they have been posting since their 10th birthday
<body>
<table width="600" border="0">
    <TR>
       <%
        for(char i='A';i<='Z';i++)
            out.println("<TD><h:commandLink action=\"#{officer.searchOfficer2}\"value="+i+">"+
                         "<f:param name=\"firstLetter\" value=\""+i+" \"/>"+
                          "</h:commandLink></TD>");
                         %>
    </TR>
</table>
</body>this is transcation officer.searchOfficer2
public String searchOfficer2() {
        return "officer_search2";
    }from the faces config.xml
i have this
<navigation-rule>
    <navigation-case>
      <from-outcome>officer_search2</from-outcome>
      <to-view-id>/users/officer/officer/List2.jsp</to-view-id>
    </navigation-case>
</navigation-rule>this new jsp has a backing bean which ought to get the parameter from
the command link.
i have this
public class OfficerController1 {
    /** Creates a new instance of OfficerController */
    public OfficerController1() {
private String firstLetter;
public String getFirstLetter() {
        return firstLetter;
    public void setFirstLetter(String firstLetter) {
        this.firstLetter = firstLetter;
public DataModel getOfficers2() {
        EntityManager em = getEntityManager();
        try{
            Query q = em.createQuery("select object(o) from Officer as o where o.fullName like '"+firstLetter+"%'");
            q.setMaxResults(batchSize);
            q.setFirstResult(firstItem);
            model = new ListDataModel(q.getResultList());
            return model;
        } finally {
            em.close();
    }}in the config.xml i added this
<managed-bean>
    <managed-bean-name>officer3</managed-bean-name>
    <managed-bean-class>users.entities.OfficerController1</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
    <managed-property>
       <property-name>firstLetter</property-name>
       <value>#{param.firstLetter}</value>>
    </managed-property>>
</managed-bean>error message
Element 'managed-property' cannot have character [children], because the type's content type is element-only

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import java.io.*;
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--

Dear Sir,
Same issue is still persist. Input parameter are not store in database.
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Password: <input type="password" name="pass">
<input type="Submit" value="Submit">
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{code}import javax.servlet.*;
import javax.servlet.http.*;
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Please help me...How store th input parameter in Database through Java Bean

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The issue is in the naming of your fields.
Change User -> user and Pass->pass
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Hello Sir,
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Allthough row increment in database but they not show in database.
Here My Code:
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package co;
import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.*;
public class SimpleBean {
private String user="";
private String pass="";
private String s="";
public String getuserName() {
return user;
public void setuserName(String user) {
this.user = user;
public String getpassword() {
return pass;
public void setpassword(String Pass) {
this.pass= pass ;
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try
System.out.println("Printed*************************************************************");
Class.forName("oracle.jdbc.driver.OracleDriver");
System.out.println("Connection loaded");
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@VijayKumar-PC:1521:XE","SYSTEM","SYSTEM");
System.out.println("Connection created");
PreparedStatement st=con.prepareStatement("insert into vij2 values(?,?)");
System.out.println("~~~~~~~~~~~~~~~~~~~~");
String NAME=getuserName();
st.setString(1,NAME);
String PASSWORD=getpassword();
st.setString(2,PASSWORD);
st.executeUpdate();
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con.close();
s= "Your logging is saved in DB ";
System.out.println("Your logging is saved in DB *****************");
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}submit.jsp:This is Submit page
<jsp:useBean id="st" class="co.SimpleBean"/>
<jsp:setProperty name="st" property="*" />
<jsp:getProperty name="st" property="userName" /> <br>
<jsp:getProperty name="st" property="password" /> <br>
<% st.issueData();%>
<%
out.println("Ur data is saved in DB");
%>Please Help me.
Thanks.

Ok, this seems to be a long and convoluted path to do absolutely nothing.
You submit the form.
You run a servlet that gets the parameters correctly (good), creates a SimpleBean (good) and then sets this into request attribute space under the names "user" and "pass" - (why?)
You then forward to the jsp: submit.jsp.
Submit.jsp creates a new SimpleBean, and attempts to populate it with <jsp:setProperty>. You then call the issueData method on it.
Your complaint: Rows are being created in the database which have empty string values instead of the parameters you have passed.
So, why are the values blank? Where do you think these values should be coming from?
Looking at SimpleBean we find one mistake - you have mis-named your get/set methods.
To properly follow java beans standards, you should use camel-case for your methods.
Rather than getuserName() the method should be getUserName(). getpassword() should be getPassword() etc etc.
The method getUserName() defines a property "userName" for the bean.
Once that is fixed, lets go to submit.jsp. The <jsp:setProperty> statement will try and set all properties of the bean from the request parameters.
There are no request parameters "userName" or "password" so those values don't get set in the bean, therefore it uses their default value of empty string - "".
There ARE request parameters called "user" and "pass" but because they aren't properties of the bean, they get ignored.
As a result, the values are empty string, and that is exactly what gets inserted into the database.
Ways to fix this
1 - rename your parameters on your form to be "userName" and "password" to match the bean. That way the <jsp:setProperty> tag will populate them properly.
or
2 - Call issueData() method from your servlet after you have created the SimpleBean. Better in my opinion as you then don't have any scriptlet code on a JSP page.
Cheers,
evnafets

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~

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Hi,
Thanks for your immediate response.
I have one more doubt. I am trying to create a Hirachical tree for form using Jtree. For dynmically populating tree data I want to pass array records from oracle forms.
In my understanding, Java importer array will work if we do importing the java beans component to oracle forms, otherwise no.
Is it possible I can pass array variable with out importing my javacomponent.
With regards

How to pass value from jsp to java bean

I have huge problem . How to pass value from jsp value to java bean.Please replay me soon

Use the <jsp:setProperty> tag. There are several ways to use it. The one you probably want is:
<jsp:setProperty name="bean_name" property="property_name" value="the_value_you_want_to_set"/>

Pass parameter to a java bean

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