I am writing code for a search in combo box with AutoSuggest feature but problem is I've to write Exactly same case. If i write "Afghanistan" it shows suggestions but if i write "afghanistan" nothing appears. Below is code. I need to create search which is non case sensitive so users are free to type their search string without any casing in mind.
/*
* Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
* Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
*/
package autosuggest;
import java.awt.EventQueue;
import java.util.Vector;
import javax.swing.JTextField;
import java.awt.HeadlessException;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Collections;
import java.util.List;
import javax.swing.DefaultComboBoxModel;
/**
*
* @author admin
*/
public class NewJFrame extends javax.swing.JFrame {
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
loadCountries();
autoSuggest();
}
private final Vector<String> v = new Vector<String>();
private JTextField tf;
private boolean hide_Flag=false;
void loadCountries() {
String[] countries={"Afghanistan",
"Albania",
"Algeria",
"Andorra",
"Angola",
"AntiguaDeps",
"Argentina",
"Armenia",
"Australia",
"Austria",
"Azerbaijan",
"Bahamas",
"Bahrain",
"Bangladesh",
"Barbados",
"Belarus",
"Belgium",
"Belize",
"Benin",
"Bhutan",
"Bolivia",
"Bosnia Herzegovina",
"Botswana",
"Brazil",
"Brunei",
"Bulgaria",
"Burkina",
"Burundi",
"Cambodia",
"Cameroon",
"Canada",
"Cape Verde",
"Central African Rep",
"Chad",
"Chile",
"China",
"Colombia",
"Comoros",
"Congo",
"Congo Democratic Rep",
"Costa Rica",
"Croatia",
"Cuba",
"Cyprus",
"Czech Republic",
"Denmark",
"Djibouti",
"Dominica",
"Dominican Republic",
"East Timor",
"Ecuador",
"Egypt",
"El Salvador",
"Equatorial Guinea",
"Eritrea",
"Estonia",
"Ethiopia",
"Fiji",
"Finland",
"France",
"Gabon",
"Gambia",
"Georgia",
"Germany",
"Ghana",
"Greece",
"Grenada",
"Guatemala",
"Guinea",
"Guinea-Bissau",
"Guyana",
"Haiti",
"Honduras",
"Hungary",
"Iceland",
"India",
"Indonesia",
"Iran",
"Iraq",
"Ireland",
"Israel",
"Italy",
"Ivory Coast",
"Jamaica",
"Japan",
"Jordan",
"Kazakhstan",
"Kenya",
"Kiribati",
"Korea North",
"Korea South",
"Kosovo",
"Kuwait",
"Kyrgyzstan",
"Laos",
"Latvia",
"Lebanon",
"Lesotho",
"Liberia",
"Libya",
"Liechtenstein",
"Lithuania",
"Luxembourg",
"Macedonia",
"Madagascar",
"Malawi",
"Malaysia",
"Maldives",
"Mali",
"Malta",
"Marshall Islands",
"Mauritania",
"Mauritius",
"Mexico",
"Micronesia",
"Moldova",
"Monaco",
"Mongolia",
"Montenegro",
"Morocco",
"Mozambique",
"Myanmar",
"Namibia",
"Nauru",
"Nepal",
"Netherlands",
"New Zealand",
"Nicaragua",
"Niger",
"Nigeria",
"Norway",
"Oman",
"Pakistan",
"Palau",
"Panama",
"Papua New Guinea",
"Paraguay",
"Peru",
"Philippines",
"Poland",
"Portugal",
"Qatar",
"Romania",
"Russian Federation",
"Rwanda",
"St Kitts Nevis",
"St Lucia",
"Saint Vincent the Grenadines",
"Samoa",
"San Marino",
"Sao Tome Principe",
"Saudi Arabia",
"Senegal",
"Serbia",
"Seychelles",
"Sierra Leone",
"Singapore",
"Slovakia",
"Slovenia",
"Solomon Islands",
"Somalia",
"South Africa",
"South Sudan",
"Spain",
"Sri Lanka",
"Sudan",
"Suriname",
"Swaziland",
"Sweden",
"Switzerland",
"Syria",
"Taiwan",
"Tajikistan",
"Tanzania",
"Thailand",
"Togo",
"Tonga",
"Trinidad Tobago",
"Tunisia",
"Turkey",
"Turkmenistan",
"Tuvalu",
"Uganda",
"Ukraine",
"United Arab Emirates",
"United Kingdom",
"United States",
"Uruguay",
"Uzbekistan",
"Vanuatu",
"Vatican City",
"Venezuela",
"Vietnam",
"Yemen",
"Zambia",
"Zimbabwe"
};
for (int i = 0; i< countries.length; i++){
v.addElement(countries[i]);
}
}
private void setModel(DefaultComboBoxModel mdl, String str){
combo.setModel(mdl);
combo.setSelectedIndex(-1);
tf.setText(str);
}
private static DefaultComboBoxModel getSuggestedModel(List<String> list, String text) {
DefaultComboBoxModel m = new DefaultComboBoxModel();
for (String s: list) {
if (s.startsWith(text)){
m.addElement((s));
}
}
return m;
}
void autoSuggest(){
combo.setEditable(true);
tf = (JTextField) combo.getEditor().getEditorComponent();
tf.addKeyListener(new KeyListener() {
@Override
public void keyTyped(KeyEvent e){
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
String text = tf.getText();
if (text.length()==0) {
combo.hidePopup();
setModel(new DefaultComboBoxModel(v), text);
}else{
DefaultComboBoxModel m = getSuggestedModel(v, text);
if (m.getSize()==0 || hide_Flag) {
combo.hidePopup();
hide_Flag=false;
}else{
setModel(m, text);
combo.showPopup();
}
}
}
});
}
@Override
public void keyPressed(KeyEvent e) {
String text = tf.getText();
int code = e.getKeyCode();
if(code==KeyEvent.VK_ENTER){
if(v.contains(text)){
v.addElement(text);
Collections.sort(v);
setModel(getSuggestedModel(v, text), text);
}
hide_Flag = true;
}else if(code==KeyEvent.VK_ESCAPE){
hide_Flag = true;
}else if(code==KeyEvent.VK_RIGHT) {
for (int i = 0; i< v.size(); i++){
String str = v.elementAt(i);
if(str.startsWith(text)){
combo.setSelectedIndex(-1);
tf.setText(str);
return;
}
}
}}
@Override
public void keyReleased(KeyEvent e) {
}
});
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
combo = new javax.swing.JComboBox<>();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(129, 129, 129)
.addComponent(combo, javax.swing.GroupLayout.PREFERRED_SIZE, 243, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(455, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(71, 71, 71)
.addComponent(combo, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(371, Short.MAX_VALUE))
);
pack();
setLocationRelativeTo(null);
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JComboBox<String> combo;
// End of variables declaration
}
