Java Swing | JSpinner

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JSpinner is a part of javax.swing package. JSpinner contains a single line of input which might be a number or a object from an ordered sequence. The user can manually type in a legal data into the text field of the spinner. The spinner is sometimes preferred because they do not need a drop down list. Spinners contain an upward and a downward arrow to show the previous and the next element when it is pressed.

Constructors of JSpinner are:

JSpinner(): Creates an empty spinner with an initial value set to zero and no constraints.
JSpinner( SpinnerModel model): Creates a spinner with a specified spinner model passed as an argument.

Commonly used methods are :

SpinnerListModel(List l): creates a spinner model with elements of list l. This spinner model can be used to set as a model for spinner.
SpinnerNumberModel(int value, int max, int min, int step): returns a spinner model whose initial value is set to value, with minimum and maximum value, and a definite step value.
setValue(Object v): sets the value of the spinner to the object passed as argument.
getValue(): returns the current value of the spinner.
getPreviousValue(): returns the previous value of the spinner.
getNextValue(): returns the next value of the spinner.

1. Program to create a simple JSpinner

Java

// java Program to create a
// simple JSpinner
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
class spinner extends JFrame {
    // frame
    static JFrame f;
 
    // default constructor
    spinner()
    {
    }
 
    // main class
    public static void main(String[] args)
    {
        // create  a new frame
        f = new JFrame("spinner");
 
        // create a JSpinner
        JSpinner s = new JSpinner();
 
        // set Bounds for spinner
        s.setBounds(70, 70, 50, 40);
 
        // set layout for frame
        f.setLayout(null);
 
        // add panel to frame
        f.add(s);
 
        // set frame size
        f.setSize(300, 300);
 
        f.show();
    }
}

Output :

2. Program to create a JSpinner and add ChangeListener to it; Program to select your date of birth using JSpinner.

Java

// Java program to select your
// date of birth using JSpinner
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
class spinner1 extends JFrame implements ChangeListener {
    // frame
    static JFrame f;
 
    // label
    static JLabel l, l1;
 
    // spinner
    static JSpinner s, s1, s2;
 
    // default constructor
    spinner1()
    {
    }
 
    // main class
    public static void main(String[] args)
    {
        // create an object of the class
        spinner1 sp1 = new spinner1();
 
        // create  a new frame
        f = new JFrame("spinner");
 
        // create a label
        l = new JLabel("select your date of birth");
        l1 = new JLabel("1 January 2000");
 
        // create a JSpinner with a minimum, maximum and step value
        s = new JSpinner();
        s1 = new JSpinner(new SpinnerNumberModel(1, 1, 31, 1));
 
        // setvalue of year
        s.setValue(2000);
 
        // store the months
        String months[] = { "January", "February", "March",
        "April", "May", "June", "July", "August",
        "September", "October", "Novemeber", "December" };
 
        // create a JSpinner with list values
        s2 = new JSpinner(new SpinnerListModel(months));
 
        // add change listener to spinner
        s.addChangeListener(sp1);
        s1.addChangeListener(sp1);
        s2.addChangeListener(sp1);
 
        // set Bounds for spinner
        s.setBounds(70, 70, 50, 40);
        s1.setBounds(70, 130, 50, 40);
        s2.setBounds(70, 200, 90, 40);
 
        // setbounds for label
        l.setBounds(10, 10, 150, 20);
        l1.setBounds(10, 300, 150, 20);
 
        // set layout for frame
        f.setLayout(null);
 
        // add label
        f.add(l);
        f.add(l1);
        f.add(s);
        f.add(s1);
        f.add(s2);
 
        // add panel to frame
        f.add(s);
 
        // set frame size
        f.setSize(400, 400);
 
        f.show();
    }
 
    // if the state is changed
    public void stateChanged(ChangeEvent e)
    {
        l1.setText(s1.getValue() + " " + s2.getValue() + " " + s.getValue());
    }
}