How to pupulate dropdown with <s:select> tag from database in Struts 2?

I want to use dropdown and getting the value in dropdown from the database, the dropdown should contain a company code for saving the purpose & company description for display purposes.

Below is my code:

Bean Class:

package com.ims.master.company.bean;

public class CompanyBean {
    
        private String id;
        private String cmpCode;
        private String cmpDes;
        private String cmpStatus;
        private String cmpCreated;
        
        public CompanyBean(String cmpCode, String cmpDes) {
            super();
            this.cmpCode = cmpCode;
            this.cmpDes = cmpDes;
        }
        
        public String getId() {
            return id;
        }
        public void setId(String id) {
            this.id = id;
        }
        public String getCmpCreated() {
            return cmpCreated;
        }
        public void setCmpCreated(String cmpCreated) {
            this.cmpCreated = cmpCreated;
        }
        public String getCmpCode() {
            return cmpCode;
        }
        public void setCmpCode(String cmpCode) {
            this.cmpCode = cmpCode;
        }
        public String getCmpDes() {
            return cmpDes;
        }
        public void setCmpDes(String cmpDes) {
            this.cmpDes = cmpDes;
        }
        public String getCmpStatus() {
            return cmpStatus;
        }
        public void setCmpStatus(String cmpStatus) {
            this.cmpStatus = cmpStatus;
        }
}

DAO class:

package com.ims.master.company.DAO;

import java.util.ArrayList;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import com.ims.hibernate.HibernateUtil;
import com.ims.master.company.bean.CompanyBean;


public class CompanyDAO {
  
    SessionFactory factory = HibernateUtil.getFactory();
    Session session = factory.openSession();
    ArrayList<CompanyBean> recList = new ArrayList<CompanyBean>();
    
    @SuppressWarnings("unchecked")
    public ArrayList<CompanyBean> retrieveCmpCode()
    {
        System.out.println("=====inside DAO======");
        Query query = session.createQuery("select b.cmpCode,b.cmpDes from CompanyBean b where b.cmpStatus=:val");
        query.setParameter("val", "Y");
        recList = (ArrayList<CompanyBean>) query.list();
        System.out.println("=====value====="+recList);
        return recList;
    }
}

Action Class:

package com.ims.master.masterData;

import java.util.ArrayList;
import com.ims.master.company.DAO.CompanyDAO;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.opensymphony.xwork2.Preparable;

public class MasterLookUp extends ActionSupport {
    
    ArrayList companyCode;
    public String getCompany()
    {
        CompanyDAO companyCodeValue = new CompanyDAO();
        companyCode = companyCodeValue.retrieveCmpCode();
        return SUCCESS;
    }
    public ArrayList getCompanyCode() {
        return companyCode;
    }
    public void setCompanyCode(ArrayList companyCode) {
        this.companyCode = companyCode;
    }
    

}

jsp:

<s:select name="companyName" list="companyCode" key="label.companyName" listKey="cmpCode" listValue="cmpDes"/>

Please suggest me, how the value will come in dropdown?

Also suggest that, how the value in dropdown will be displayed selected in the edit part?

you can use below code in your JSP

<html:select property ="cmpDes">
    <html:optionsCollection name ="cmpDes" /> 
    </html:select>

When above code is added in ur JSP , your dropdown will have the cmp description which is fetched from DB.

And below is site which has perfect example to learn struts-1 and is also related to your question for getting some ideas to go on. http://www.javabeat.net/struts-html-optionscollection-tag-htmloptionscollection/