package com.myeclipseide.example.myblog.secure;import com.opensymphony.xwork2.ActionSupport;public class AuthenticateUser extends ActionSupport {    private String userName;    private String password;    public String getUserName() {        return userName;    }    public void setUserName(String userName) {        this.userName = userName;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public String execute() {        // Empty username or password value is not permitted.         if (getUserName().equals("") || getPassword().equals("")) {            addActionError("Invalid username or password. Please try again!");            return ERROR;        }        return SUCCESS;    }}