How to set time in JSpinner using Java?
2 answers
@lavina.marks
You can use the setValue() method of the JSpinner class to set the time in a JSpinner using Java. The method takes an object of the SpinnerModel class, which represents the data model for the spinner.
For example, to set the time to 12:30 PM, you can use the following code:
1 2 3 4 5 6 7 |
Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.HOUR_OF_DAY, 12); calendar.set(Calendar.MINUTE, 30); SpinnerDateModel spinnerModel = new SpinnerDateModel(calendar.getTime(), null, null, Calendar.MINUTE); JSpinner timeSpinner = new JSpinner(spinnerModel); timeSpinner.setEditor(new JSpinner.DateEditor(timeSpinner, "HH:mm")); |
You may also use Calendar.HOUR instead of Calendar.HOUR_OF_DAY if you want to use 12 hours clock instead of 24 hours clock.
Note that you will also need to set the editor for the spinner, which determines how the time is displayed in the spinner. In the above example, the editor is set to display the time in the format "HH:mm".
@lavina.marks
Here is a complete example of how to set the time in a JSpinner using Java:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 |
import javax.swing.*;
import java.awt.*;
import java.util.Calendar;
public class Main {
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> {
// Create a new frame
JFrame frame = new JFrame("Time Spinner Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new FlowLayout());
// Create a Calendar instance and set the time to 12:30 PM
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 12);
calendar.set(Calendar.MINUTE, 30);
// Create a SpinnerDateModel using the Calendar instance
SpinnerDateModel spinnerModel = new SpinnerDateModel(calendar.getTime(), null, null, Calendar.MINUTE);
// Create a JSpinner using the SpinnerDateModel
JSpinner timeSpinner = new JSpinner(spinnerModel);
timeSpinner.setEditor(new JSpinner.DateEditor(timeSpinner, "HH:mm"));
// Add the JSpinner to the frame
frame.add(timeSpinner);
// Set the frame size and make it visible
frame.setSize(300, 300);
frame.setVisible(true);
});
}
}
|
In this example, we create a new spinner model using SpinnerDateModel. We set the initial value to the desired time using a Calendar instance. We then create a JSpinner using this spinner model and set the editor to display the time in the desired format ("HH:mm"). Finally, we add the JSpinner to a frame and display it on the screen.