Swing: JFormattedTextField set to numbers using Netbeans only
for a long time the reader asks for the first time. I have a little problem with JFormattedTextField
: I only want to set formatted text boxes. I created one with Swing frontend on NetBeans.
My code looks like this:
package SerasApp;
import static java.lang.System.*;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JFormattedTextField;
import javax.swing.text.DefaultFormatterFactory;
import javax.swing.text.MaskFormatter;
import javax.swing.text.NumberFormatter;
/**
* @author adam
*/
public class Main extends javax.swing.JFrame {
/**
* Creates new form Main
*/
public Main() {
initComponents();
}
//set position of label to be the center of the frame
public void PositionHiSera()
{
//find position of jpanel
int FrameHeight = this.Intro.getHeight();
int FrameWidth = this.Intro.getWidth();
int LabelSize[] = new int[2];
LabelSize[0] = HiSera.getWidth();
LabelSize[1] = HiSera.getHeight();
out.println(LabelSize[0]);
out.println(LabelSize[1]);
int Origin[] = new int[2];
Origin[1] = (FrameHeight/2)-(LabelSize[0]/2);
Origin[0] = (FrameWidth/2)-(LabelSize[1]/2);
//set label origin
HiSera.setLocation(Origin[1], Origin[0]);
}
public void HumidityLevel()
{
NumberFormat a = NumberFormat.getNumberInstance();
NumberFormatter b = new NumberFormatter(a);
DefaultFormatterFactory c = new DefaultFormatterFactory(b);
humidityLevel.setFormatterFactory(c);
}
/**
* 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() {
MainDisplayFrame = new javax.swing.JPanel();
Intro = new javax.swing.JPanel();
HiSera = new javax.swing.JLabel();
MainMenu = new javax.swing.JPanel();
WeatherOptions = new javax.swing.JPanel();
sunny = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
humidityLevel = new javax.swing.JFormattedTextField();
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
addWindowFocusListener(new java.awt.event.WindowFocusListener() {
public void windowGainedFocus(java.awt.event.WindowEvent evt) {
formWindowGainedFocus(evt);
}
public void windowLostFocus(java.awt.event.WindowEvent evt) {
}
});
MainDisplayFrame.setLayout(new java.awt.CardLayout());
Intro.setMaximumSize(new java.awt.Dimension(30000, 30000));
HiSera.setText("Hi Sera");
javax.swing.GroupLayout IntroLayout = new javax.swing.GroupLayout(Intro);
Intro.setLayout(IntroLayout);
IntroLayout.setHorizontalGroup(
IntroLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(IntroLayout.createSequentialGroup()
.addGap(209, 209, 209)
.addComponent(HiSera)
.addContainerGap(243, Short.MAX_VALUE))
);
IntroLayout.setVerticalGroup(
IntroLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(IntroLayout.createSequentialGroup()
.addGap(225, 225, 225)
.addComponent(HiSera)
.addContainerGap(258, Short.MAX_VALUE))
);
MainDisplayFrame.add(Intro, "card2");
javax.swing.GroupLayout MainMenuLayout = new javax.swing.GroupLayout(MainMenu);
MainMenu.setLayout(MainMenuLayout);
MainMenuLayout.setHorizontalGroup(
MainMenuLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, Short.MAX_VALUE, Short.MAX_VALUE)
);
MainMenuLayout.setVerticalGroup(
MainMenuLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 500, Short.MAX_VALUE)
);
MainDisplayFrame.add(MainMenu, "card2");
WeatherOptions.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusGained(java.awt.event.FocusEvent evt) {
WeatherOptionsFocusGained(evt);
}
});
sunny.setText("Sunny");
sunny.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
sunnyActionPerformed(evt);
}
});
jButton2.setText("Overcast");
jButton3.setText("Rainy");
jLabel1.setText("Humidity Level");
javax.swing.GroupLayout WeatherOptionsLayout = new javax.swing.GroupLayout(WeatherOptions);
WeatherOptions.setLayout(WeatherOptionsLayout);
WeatherOptionsLayout.setHorizontalGroup(
WeatherOptionsLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(WeatherOptionsLayout.createSequentialGroup()
.addGroup(WeatherOptionsLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(WeatherOptionsLayout.createSequentialGroup()
.addGap(81, 81, 81)
.addComponent(sunny)
.addGap(75, 75, 75))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, WeatherOptionsLayout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addGap(36, 36, 36)))
.addGroup(WeatherOptionsLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(humidityLevel, javax.swing.GroupLayout.PREFERRED_SIZE, 178, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(WeatherOptionsLayout.createSequentialGroup()
.addComponent(jButton2)
.addGap(69, 69, 69)
.addComponent(jButton3)))
.addContainerGap(99, Short.MAX_VALUE))
);
WeatherOptionsLayout.setVerticalGroup(
WeatherOptionsLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(WeatherOptionsLayout.createSequentialGroup()
.addGap(225, 225, 225)
.addGroup(WeatherOptionsLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(sunny)
.addComponent(jButton2)
.addComponent(jButton3))
.addGap(87, 87, 87)
.addGroup(WeatherOptionsLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(humidityLevel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(132, Short.MAX_VALUE))
);
MainDisplayFrame.add(WeatherOptions, "card2");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 500, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(MainDisplayFrame, javax.swing.GroupLayout.DEFAULT_SIZE, 500, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 500, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(MainDisplayFrame, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void formWindowGainedFocus(java.awt.event.WindowEvent evt) {
// TODO add your handling code here:
PositionHiSera();
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
//make Intro Disappear and make Weather Options Appear
WeatherOptions.setVisible(true);
Intro.setVisible(false);
HumidityLevel();
out.println("tests");
}
private void sunnyActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void WeatherOptionsFocusGained(java.awt.event.FocusEvent evt) {
// TODO add your handling code here:
}
/**
* @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(Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Main.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 Main().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel HiSera;
private javax.swing.JPanel Intro;
private javax.swing.JPanel MainDisplayFrame;
private javax.swing.JPanel MainMenu;
private javax.swing.JPanel WeatherOptions;
private javax.swing.JFormattedTextField humidityLevel;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JButton sunny;
// End of variables declaration
}
I also tried setting humidityLevel
to a new formatted textbox to no avail.
Basically this is a bit of code:
public void HumidityLevel()
{
NumberFormat a = NumberFormat.getNumberInstance();
NumberFormatter b = new NumberFormatter(a);
DefaultFormatterFactory c = new DefaultFormatterFactory(b);
humidityLevel.setFormatterFactory(c);
}
and this bit:
private void formWindowGainedFocus(java.awt.event.WindowEvent evt) {
// TODO add your handling code here:
PositionHiSera();
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
//make Intro Disappear and make Weather Options Appear
WeatherOptions.setVisible(true);
Intro.setVisible(false);
HumidityLevel();
out.println("tests");
}
I also don't want to use JTextField
because I want to know how to use JFormattedTextField
.
+3
source to share
1 answer
I want to set only formatted text boxes.
Using Design view, right-click the formatted text field and select an option Properties
. Then find the property formatterFactory
:
If you try to edit this property, the following dialog will appear. Select an option integer default
in the category number
:
To do this, your textbox will be initialized with NumberFormat.getIntegerInstance () . If you check the generated source code, you will see something like this:
jFormattedTextField1 = new javax.swing.JFormattedTextField();
jFormattedTextField1.setFormatterFactory(new javax.swing.text.DefaultFormatterFactory(new javax.swing.text.NumberFormatter(java.text.NumberFormat.getIntegerInstance())));
Off-topic
As @mKorbel pointed out, using it Thread.sleep()
is a bad idea and will block the Event Dispatch Thread (EDT) , which is a single and dedicated thread where creating / updating Swing components and event handling should be done. If this thread is blocked, your GUI will not be able to redraw itself and will "hang". In this case, you should use Swing Timer instead . See Concurrency in Swing for details .
+8
source to share