java.lang.NullPointerException

hey i was wonder what i was doing wrong. i keep getting this error

package Student;

import java.sql.*;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;

@ManagedBean
@SessionScoped

public class Login {
  private String username ="";
  private String password ="";
  private PreparedStatement pstmt;
  private ResultSet rs;

/**
     * Initialize the database
     */
    public Login() {
    initializeJdbc();
  }

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;
  }

private boolean isRquiredFieldsFilled() {
    return !(username == null || password == null
            || username.trim().length() == 0
            || password.trim().length() == 0);
  }

public String processSubmit() {
    if (isRquiredFieldsFilled()) {
      return "confirminfo";
    } else {
      return "";
    }
  }

public String getRequiredFields() {
    if (isRquiredFieldsFilled()) {
      return "";
    } else {
      return "Username and Password are required";
    }
  }

public String getInput() {
    return "<p style=\"color:red\">You entered <br />"
            + "Username: " + username + "<br />"
            + "Password: " + password + "<br />";
  }

/** Initialize database connection */
  private void initializeJdbc() {
    try {
      // Explicitly load a MySQL driver
      Class.forName("com.mysql.jdbc.Driver");
      System.out.println("Driver loaded");
      
      // Establish a connection
      Connection conn = DriverManager.getConnection(
              "jdbc:mysql://localhost/test", "scott", "tiger");

// Create a Statement
      pstmt = conn.prepareStatement("Select username, password from studentaccount"
              + " where username = ? and password = ? ");
    } catch (Exception ex) {
      System.out.println(ex);
    }
  }

/** Store an address to the database */
  public String getInfo() throws SQLException{
      String action = "studentlogin";
            pstmt.setString(1, username);
            pstmt.setString(2, password);
            pstmt.executeQuery();
            if(rs.next())
              {
                  action = "studentpage";
                  return action;
              }
            return action;
  }
}

Confirminfo.xhtml

The error is

Can you do something like this