JSpinner Component in Java

[tim09leary]

This is a tutorial in which we will going to create a program that will have a JSpinner Component in Java.

A JSpinner Component is similar to a JComboBox and JList in java that it has object options to choose but this component has only a single line input field that lets the user select an object value from an ordered sequence.

It will have the SpinnerModel to have the JSpinner's sequence.

So, now let's start this tutorial!

1. Open JCreator or NetBeans and make a java program with a file name of jSpinnerComponent.java.

2. Import the following packages:

1. import
   
   java.awt.*
   
   ;
   
   //used to access the flowlayout
   
2. import
   
   javax.swing.*
   
   ;
   
   // used to access the JSpinner, SpinnerListModel, SpinnerModel, and the JFrame Class
   

3. Initialize your variable in your Main, variable months for the String array, variable spinModel for SpinnerModel class, variable spinner for JSpinner component, and variable frame for the JFrame class.

1. String
   
   months[
   
   ]
   
   =
   
   {
   
   "January"
   
   ,"February"
   
   ,"March"
   
   ,"April"
   
   ,"May"
   
   ,"June"
   
   ,"July"
   
   ,"August"
   
   ,"September"
   
   ,"October"
   
   ,"November"
   
   ,"December"
   
   }
   
   ;
   
2. SpinnerModel spinModel =
   
   new
   
   SpinnerListModel(
   
   months)
   
   ;
   
3. JSpinner spinner =
   
   new
   
   JSpinner(
   
   spinModel)
   
   ;
   
4. JFrame
   
   frame =
   
   new
   
   JFrame
   
   (
   
   "JSpinner Component"
   
   )
   
   ;
   

We have created a String array of months to display these elements in the spinner. But before putting the array value to the JSpinner, we will put it first to the SpinnerModel class and then put the spinModel variable of this class to the JSpinner.

Then we have the JFrame component that will serve as the container of the objects and has the flowlayout as the layout used as we have this code below:

1. frame.getContentPane
   
   (
   
   )
   
   .setLayout
   
   (
   
   new
   
   FlowLayout
   
   (
   
   )
   
   )
   
   ;
   
2. frame.getContentPane
   
   (
   
   )
   
   .add
   
   (
   
   spinner)
   
   ;
   

4. Lastly, set the size and visibility of the Frame.

1. frame.setSize
   
   (
   
   300
   
   , 100
   
   )
   
   ;
   
2. frame.setVisible
   
   (
   
   true
   
   )
   
   ;
   

Output:

Here's the full code of this tutorial:

1. import
   
   java.awt.*
   
   ;
   
   //used to access the flowlayout
   
2. import
   
   javax.swing.*
   
   ;
   
   // used to access the JSpinner, SpinnerListModel, SpinnerModel, and the JFrame Class
   
3. 
   
4. 
   
5. public
   
   class
   
   jSpinnerComponent {
   
6. public
   
   static
   
   void
   
   main(
   
   String
   
   args[
   
   ]
   
   )
   
   throws
   
   Exception
   
   {
   
7. String
   
   months[
   
   ]
   
   =
   
   {
   
   "January"
   
   ,"February"
   
   ,"March"
   
   ,"April"
   
   ,"May"
   
   ,"June"
   
   ,"July"
   
   ,"August"
   
   ,"September"
   
   ,"October"
   
   ,"November"
   
   ,"December"
   
   }
   
   ;
   
8. SpinnerModel spinModel =
   
   new
   
   SpinnerListModel(
   
   months)
   
   ;
   
9. JSpinner spinner =
   
   new
   
   JSpinner(
   
   spinModel)
   
   ;
   
10. JFrame
    
    frame =
    
    new
    
    JFrame
    
    (
    
    "JSpinner Component"
    
    )
    
    ;
    
11. 
    
12. 
    
13. 
    
14. frame.getContentPane
    
    (
    
    )
    
    .setLayout
    
    (
    
    new
    
    FlowLayout
    
    (
    
    )
    
    )
    
    ;
    
15. frame.getContentPane
    
    (
    
    )
    
    .add
    
    (
    
    spinner)
    
    ;
    
16. 
    
17. 
    
18. frame.setSize
    
    (
    
    300
    
    , 100
    
    )
    
    ;
    
19. frame.setVisible
    
    (
    
    true
    
    )
    
    ;
    
20. 
    
21. 
    
22. }
    
23. }
    

Best Regards,

Engr. Lyndon Bermoy
IT Instructor/System Developer/Android Developer/Freelance Programmer

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