Help on dropdown jTextField

Question

package ui;
import entity.*;
import ui.*;
import database.*;
import controller.*;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JList;
public class UpdateForm {
     private JFrame jFrame = null; // @jve:decl-index=0:visual-constraint="65,24"
     private JPanel jContentPane = null;
     private JTextField jTextField = null;
     private JTextField jTextField1 = null;
     Guest guest;
     private JTextField text;
     final JPopupMenu menu = new JPopupMenu();
     private ArrayList<Guest> guestList;
     private UpdateController update = new UpdateController();
     private JButton jButton = null;
     * This method initializes jFrame     
     * @return javax.swing.JFrame     
     private JFrame getJFrame() {
          if (jFrame == null) {
               jFrame = new JFrame();
               jFrame.setSize(new java.awt.Dimension(531,334));
               jFrame.setContentPane(getJContentPane());
          return jFrame;
     * This method initializes jContentPane     
     * @return javax.swing.JPanel     
     private JPanel getJContentPane() {
          if (jContentPane == null) {
               jContentPane = new JPanel();
               jContentPane.setLayout(null);
               jContentPane.add(getJTextField(), null);
               jContentPane.add(getJTextField1(), null);
               jContentPane.add(getJButton(), null);
          return jContentPane;
     * This method initializes jTextField     
     * @return javax.swing.JTextField     
     private JTextField getJTextField() {
          if (jTextField == null) {
               jTextField = new JTextField();
               jTextField.setBounds(new java.awt.Rectangle(49,29,225,20));
               jTextField.addKeyListener(new java.awt.event.KeyAdapter() {
                    public void keyReleased(java.awt.event.KeyEvent e) {
                         haha(); // TODO Auto-generated Event stub keyReleased()
          return jTextField;
     public void haha(){
          menu.setVisible(false);
          menu.removeAll();
          String name = jTextField.getText();
          if(name!=null&&name.trim().length()>0){
               guestList = CreateController.getAllGuest();     
               for (int i = 0; i <guestList.size(); i++) {
                    JMenuItem item = new JMenuItem(name+" : "+i);
                    item.addActionListener(new CustomActionListener(i));
                    Guest s = new Guest(name, null);
                    UpdateController cc = new UpdateController();
                    menu.add(s.getname());
          menu.show(jTextField, jTextField.getLocation().x-jTextField.getWidth(), jTextField.getLocation().y+jTextField.getHeight());
          jTextField.requestFocus();
     public class CustomActionListener implements ActionListener{
          private int index;
          public CustomActionListener(int index){
               this.index=index;
          public void actionPerformed(ActionEvent e) {
               System.out.println(" Index : "+index);
     * This method initializes jTextField1     
     * @return javax.swing.JTextField     
     private JTextField getJTextField1() {
          if (jTextField1 == null) {
               jTextField1 = new JTextField();
               jTextField1.setBounds(new java.awt.Rectangle(65,156,194,20));
          return jTextField1;
     * This method initializes jButton     
     * @return javax.swing.JButton     
     private JButton getJButton() {
          if (jButton == null) {
               jButton = new JButton();
               jButton.setBounds(new java.awt.Rectangle(395,96,77,30));
               jButton.setText("get");
               jButton.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(java.awt.event.ActionEvent e) {
                         getinformation(); // TODO Auto-generated Event stub actionPerformed()
          return jButton;
public void getinformation(){
     String name = getJTextField().getText();
     System.out.println(name);
     if (name.equals(""))
          JOptionPane.showMessageDialog(null, "Please enter user id!");
     else{
          guest = new Guest(name,null);
          UpdateController update = new UpdateController();
          if (guest.retrieveGuest()){
               jTextField1.setText(guest.getic_no());
          System.out.println(guest.getic_no());
          else{
               JOptionPane.showMessageDialog(null, "Record does not exist!");
     public static void main(String[]args){
          UpdateForm updateform = new UpdateForm();
          updateform.getJFrame().setVisible(true);
i am trying to make the Textfield dropdown the values from my database which colum is name.currently the menu only displays out what i am typing and does not search for related values in the column to whatver i am typing.what corrections are needed so that the jTxtfield will search the values in database column under name and display out related stuffs while i start entering on the jTextField. this is my entity class
package entity;
import java.sql.ResultSet;
import java.util.*;
import ui.*;
import controller.*;
import database.DBController;
public class Guest {
private String name;
private String ic_no;
private String handphone_no;
private String dob;
private String country;
private String gender;
private String house_phone;
private String address;
private String zipcode;
private String photo;
private String countrylist;
private String genderlist;
private String dob1;
private String dob2;
public Guest(String name,String ic_no,String handphone_no,String dob,String country,String gender,String house_phone,String address,String zipcode,String dob1,String dob2){
     this.name=name;
     this.ic_no=ic_no;
     this.handphone_no=handphone_no;
     this.dob=dob;
     this.country = country;
     this.gender = gender;
     this.house_phone=house_phone;
     this.address = address;
     this.zipcode=zipcode;
     this.dob1=dob1;
     this.dob2=dob2;
public Guest(String name,String ic_no){
     this.ic_no=ic_no;
     this.name=name;
public String getname(){
     return name;
public void setname(String name){
     this.name=name;
public String getic_no(){
     return ic_no;
public void setic_no(String ic_no){
     this.ic_no=ic_no;
public String gethandphone_no(){
     return handphone_no;
public void sethandphone_no(String handphone_no){
     this.handphone_no=handphone_no;
public String getdob(){
     return dob;
public void setdob(String dob){
     this.dob=dob;
public String getcountry(){
     return country;
public void setcountry(String country){
     this.country=country;
public String getgender(){
     return gender;
public void setgender(String gender){
     this.gender=gender;
public String gethouse_phone(){
     return house_phone;
public void sethouse_phone(String house_phone){
     this.house_phone=house_phone;
public String getaddress(){
return address;
public void setaddress(String address){
     this.address=address;
public String getzipcode(){
     return zipcode;
public void setzipcode(String zipcode){
     this.zipcode=zipcode;
public String getphoto(){
     return photo;
public void setphoto(String photo){
     this.photo=photo;
public String getcountrylist(){
     return countrylist;
public void setcountrylist(String countrylist){
     this.countrylist= countrylist;
public String getgenderlist(){
     return genderlist;
public void setgenderlist(String genderlist){
     this.genderlist=genderlist;
public String getdob1(){
     return dob;
public void setdob1(String dob1){
     this.dob1=dob1;
public String getdob2(){
     return dob2;
public void setdob2(String dob2){
     this.dob2=dob2;
public boolean retrieveGuest(){
     boolean success = false;
     ResultSet rs = null;
     DBController db = new DBController();
     db.setUp("database");
     String dbQuery = "SELECT * FROM Guest WHERE name ='";
     dbQuery += name + "'" ;
     rs = db.readRequest(dbQuery);
     try{
          if (rs.next()){
               ic_no = rs.getString("ic_no");
               success = true;
     }catch (Exception e) {
          e.printStackTrace();
     db.terminate();
     return success;
}

Answer 1

You really need to follow AndrewThompson64 recommendation to use code tags,
some indentation and comments would also be good, and put the explanation before the code.
Your question is too difficult to read and understand!
Are you trying to develop some kind of web browser AddressBar GUI ?
That shows entries related to what the user is typing on the field, and also allows the user the select an item on the dropdown?
If that's your case, I'll post an example code I developed here.