Java For Dummies Quick Reference

JSpinner Class

Package: javax.swing

Using this creates a spinner control, which is a text field that has two little arrows next to it that allow the user to increase or decrease the value in the text field. Usually, the text field contains a number, so clicking one of the little arrows increments or decrements the number. You can also create a spinner that displays data taken from an array or a collection.

Figure 5-11 shows three spinners arranged as a simple time picker.

Figure 5-11

This class can be used in conjunction with the SpinnerModel interface and two classes that implement it: Spinner NumberModel and SpinnerListModel. For more information, see SpinnerNumberModel Class and SpinnerListModel Class.

Constructors

Constructor	Description
JSpinner()	Creates a default spinner. The default spinner lets the user choose an integer that has an initial value of 0 and no minimum or maximum values.
JSlider(SpinnerModel model)	Creates a spinner using the specified SpinnerModel object.

Methods

Method	Description
void addChangeListener(ChangeListener listener)	Adds a ChangeListener to listen for change events
int getValue()	Gets the value
void setToolTipText(String ext)	Sets the tooltip text that’s displayed if the user rests the mouse over the slider for a few moments

You can create a default spinner that lets the user select integer ...