禁用 JSpinner 上的向上和向下箭头按钮

Question

I have a JSpinner on which I would like to take control of when editing is enabled. It's easy enough with the keyboard, but how about those little arrow widgets at the side? I can't even find references to them in the JSpinner source or any of its enclosed classes.

Answer 1

You can use setUI() method to hide Jspinner arrow.

public void hideSpinnerArrow(JSpinner spinner) {
        Dimension d = spinner.getPreferredSize();
        d.width = 30;
        spinner.setUI(new BasicSpinnerUI() {
            protected Component createNextButton() {
                return null;
            }

            protected Component createPreviousButton() {
                return null;
            }
        });
        spinner.setPreferredSize(d);
    }

As you see, just make createNextButton() and createPreviousButton() return null .

Because we used a BasicUI so we have to setup Spinner size again. I used PreferredSize .

Answer 2

you can't take control of these two arrow buttons but you can do like this

    private void buttonActionPerformed(java.awt.event.ActionEvent evt) {                                  

          p.setEnabled(false);

} 

suppose you want a button pressed and the user will not able to use jspinner at all this is a hint for more actions you can modified it as well

Answer 3

you can also allow use to use the jspinner untill for a specific value using

   if(spinner.getValue()==10){
       //show error message and 
       spinner.setEnabled(false);
   }

Answer 4

If the UI class used derives from BasicSpinnerUI , the arrow buttons can be removed with:

    for (Component component : spinner.getComponents()) {
        if (component.getName() != null && component.getName().endsWith("Button")) {
            spinner.remove(component);
        }
    }