changelistener

I'm making an application that uses a JSpinner with a max number 30,I should choose a value from this JSpinner and tape a String to the JTextField and the result will appear in the Textarea,when I compile I have many problems concerning the method jSpinner1State,can any one help me because I don't know where is my problem. This is my code of the method JSpinner: jSpinner1.addChangeListener(this); private void jSpinner1StateChanged(javax.swing.event.ChangeEvent evt) { // TODO add your handling code here: Object sp=jSpinner1.getValue(); int i =Integer.parseInt(sp.toString() ); String targetIP

I'm using the IResourceChangeListener to listen for workspace/project changes. It's implemented as proposed by the Eclipse example: IWorkspace workspace = ResourcesPlugin.getWorkspace(); IResourceChangeListener resourceChangeListener = new IResourceChangeListener() { public void resourceChanged(IResourceChangeEvent event) { System.out.println("Something changed!"); } }; workspace.addResourceChangeListener(resourceChangeListener, IResourceChangeEvent.POST_BUILD); // some time later on ... workspace.removeResourceChangeListener(resourceChangeListener); I implemented this code in a relatively new

I am trying to get my JMenuBar to model the behavior of the menu bars of Firefox and iTunes. The behavior: the menu bar is initially hidden. But, when you press Alt , the menu bar appears (with the first item selected) and when you don't have a menu item selected, the menu bar disappears. My idea was to listen for selection changes to the JMenuBar via a ChangeListener on its SelectionModel . However, the behavior of the attached SSCCE is not as desired. When the frame loads, the JMenuBar is not visible. When you press Alt , the menu bar appears with the first menu selected (thanks to the

I am using couple of JSpinners in my project who display the hour and minutes. When the JSpinner is incremented or decremented i have to save the value to the database. But the problem is that the JSpinners are giving me old values. eg- If the time displayed is 09:30 and i increment the time to 10:30 , I am getting 09:30 as the returned value. I am using following code UPDATED SSCCE package spinnerupdation; import java.awt.Container; import java.awt.FlowLayout; import java.text.SimpleDateFormat; import java.util.Calendar; import javax.swing.JFormattedTextField; import javax.swing.JFrame;

How to make the update immediately when the jSpinner value was changed. ChangeListener listener = new ChangeListener() { public void stateChanged(ChangeEvent e) { jLabel.setText(e.getSource()); } }; spinner1.addChangeListener(listener); The code above doesnt change the label text automatically, it required you to click again anyplace to update. 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

i have a JavaFX Application and in there a concurrency Task. While the Task is running, i want to append the message from updateMessage() to a TextArea because the binding doesn't append new text to the TextArea, i used a ChangeListener worker.messageProperty().addListener((observable, oldValue, newValue) -> { ta_Statusbereich.appendText("\n" + newValue); }); That is working but not on every change. I checked it with a System.out.println() and counted in the task from 1 to 300 for (Integer i = 1; i <= 300; i++) { updateMessage(i.toString()); System.out.println(i.toString()); } this println()