Java JSpinner

The object of JSpinner class is a single line input field that allows the user to select a number or an object value from an ordered sequence.

JSpinner class declaration

Let's see the declaration for javax.swing.JSpinner class.

Commonly used Contructors:

Constructor	Description
JSpinner()	It is used to construct a spinner with an Integer SpinnerNumberModel with initial value 0 and no minimum or maximum limits.
JSpinner(SpinnerModel model)	It is used to construct a spinner for a given model.

Commonly used Methods:

Method	Description
void addChangeListener(ChangeListener listener)	It is used to add a listener to the list that is notified each time a change to the model occurs.
Object getValue()	It is used to return the current value of the model.

Java JSpinner Example

import javax.swing.*;  
public class SpinnerExample {
	public static void main(String[] args) {  
	JFrame f=new JFrame("Spinner Example");  
	SpinnerModel value =
	         new SpinnerNumberModel(5, //initial value
	            0, //minimum value
	            10, //maximum value
	            1); //step
	JSpinner spinner = new JSpinner(value); 
            spinner.setBounds(100,100,50,30);  
            f.add(spinner);  
            f.setSize(300,300);  
            f.setLayout(null);  
            f.setVisible(true);   
}
}

Output:

Java JSpinner Example with ChangeListener

imp

ort javax.swing.*;  
import javax.swing.event.*;
public class SpinnerExample {
	public static void main(String[] args) {  
	JFrame f=new JFrame("Spinner Example");  
	final JLabel label = new JLabel();          
             label.setHorizontalAlignment(JLabel.CENTER);  
             label.setSize(250,100);  
	SpinnerModel value =
	         new SpinnerNumberModel(5, //initial value
	            0, //minimum value
	            10, //maximum value
	            1); //step
	JSpinner spinner = new JSpinner(value); 
            spinner.setBounds(100,100,50,30);  
            f.add(spinner);  f.add(label);
           f.setSize(300,300);  
           f.setLayout(null);  
           f.setVisible(true);   
           spinner.addChangeListener(new ChangeListener() {
        public void stateChanged(ChangeEvent e) {
         label.setText("Value : " + ((JSpinner)e.getSource()).getValue());
        }
     });
}
}

Output: