changelistener – Tarik Billa

JSpinner Value change Events

July 25, 2023 by Tarik

The answer is to configure the formatter used in the JFormattedTextField which is a child of the spinner’s editor: formatter.setCommitsOnValidEdit(true); Unfortunately, getting one’s hand on it is as long and dirty as the introductory sentence: final JSpinner spinner = new JSpinner(); JComponent comp = spinner.getEditor(); JFormattedTextField field = (JFormattedTextField) comp.getComponent(0); DefaultFormatter formatter = (DefaultFormatter) field.getFormatter(); … Read more

JTabbedPane ChangeListener

June 8, 2023 by Tarik

By JDK 6 Update 26 (Windows 7 64-Bit), I only get one event for the following demonstration code: public static void main(String[] args) { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); frame.setBounds(0, 0, 300, 400); frame.setLayout(null); final JTabbedPane tabbedPane = new JTabbedPane(); tabbedPane.addTab(“One”, new JPanel()); tabbedPane.addTab(“Two”, new JPanel()); tabbedPane.addTab(“Three”, new JPanel()); tabbedPane.addChangeListener(new ChangeListener() { public void … Read more