Java Swing JSpinner
Chapter:
Swing
Last Updated:
03-10-2016 16:58:59 UTC
Program:
/* ............... START ............... */
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class JavaJSpinnerExample {
private JFrame mainFrame;
private JLabel headerLabel;
private JLabel statusLabel;
private JPanel controlPanel;
public JavaJSpinnerExample() {
prepareGUI();
}
public static void main(String[] args) {
JavaJSpinnerExample swingControlDemo = new JavaJSpinnerExample();
swingControlDemo.showSpinnerDemo();
}
private void prepareGUI() {
mainFrame = new JFrame("Java Swing Examples");
mainFrame.setSize(400, 400);
mainFrame.setLayout(new GridLayout(3, 1));
mainFrame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent windowEvent) {
System.exit(0);
}
});
headerLabel = new JLabel("", JLabel.CENTER);
statusLabel = new JLabel("", JLabel.CENTER);
statusLabel.setSize(350, 100);
controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
mainFrame.add(headerLabel);
mainFrame.add(controlPanel);
mainFrame.add(statusLabel);
mainFrame.setVisible(true);
}
private void showSpinnerDemo() {
headerLabel.setText("Control in action: JSpinner");
SpinnerModel spinnerModel = new SpinnerNumberModel(10, // initial value
0, // min
100, // max
1);// step
JSpinner spinner = new JSpinner(spinnerModel);
spinner.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent e) {
statusLabel.setText("Value : " + ((JSpinner) e.getSource()).getValue());
}
});
controlPanel.add(spinner);
mainFrame.setVisible(true);
}
}
/* ............... END ............... */
Output
Notes:
-
A JSpinner component combines functions from a JFormattedTextField and
- an editable JComboBox.
- JSpinner can have a list of choices and at the same time, we can also apply a format to the displayed value.
- JSpinner provides the spinning capability depending on its model.
- The list of choices in a JSpinner must be an ordered list.
- A spinner model is an instance of the SpinnerModel interface. It defines the getValue(), setValue(), getPreviousValue(), and getNextValue() methods to work with values in the JSpinner.
Tags
JSpinner, Swing, Java