In this method, I tried to select the currently selected panel, then select the index 0 JPanel and re-select the current one to simulate the ChangeListener event, However, when the user comes back from a JDialog, I don't have this opportunity to do so, How do I trigger the ChangeListener of the tabbedPane (JTabbedPane) conveniently?
public void refreshPanels() throws SQLException, IOException {
parent.clearSelection();
centerPanel.removeAll();
// change data set first, if the JDialog
// is displayed however, since no more JPanels
I have a Tcr object as a member variable of the JFrame. But When ChangeListener swings into action, the variable inside it are all nulls. the TcrPanel is created before the ChangeListener is triggered.
I have two classes. One constructs my a rectangle using Graphics2D (the class is called Rectangles). The second takes a user input for the triangle, which I am passing back to the first class. I am trying to trigger a repaint of class one from the action listener I have on a button in the second class. how to trigger this event?
select 3 elements from the list: you'll see the log of the ChangeListener that tell you every time all items selected remove 1 element from previous selection: you will not receive the notification!!! remove the other two elements: only when the selection is empty you will see a new notification from changeListener...
I have created a swing application which has a TrayIcon, this has one button that has the following code:
displayItem.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e) { trayIcon.displayMessage("Hello Title","Hello World", TrayIcon.MessageType.WARNING); } }); [/highlight]
I have another class which I run via the following:
Thread counter = new Thread(new regCheck()); counter.start();
And within this "start" method I want to be able to wait 10 seconds and then trigger the popup that appeared within the original class. I think that the right method of achieving this is to create a function within my original class causes the popup.
public void display(String a, String b) { trayIcon.displayMessage(a,b, TrayIcon.MessageType.WARNING); }
However I have two issues here:
-firstly I dont know how to get the original trayIcon image from the method it was initialized into this new method. -secondly I dont know how to trigger this event from the other class. Here is the method that I tried (but doesnt work)
window w = new window(); w.display("a","b");
This doesn't work because window's main begins to run and endlessly creates multiple windows and TrayIcons. What is the correct way to implement this sort of behaviour?
I've constructed 4 different levels and allow the user to select the level they want to play from a central JPanel in a Card Layout system. My problem is that once a level is completed, I can't switch the JPanel which is displayed to start the next level, since I don't know how to access the original JPanel which acts as a driver for the other panels.
Just i want add a progress bar for listening MySwingWorker's setProgress updates. When buton clicked swingworker should executed and progress bar should come to screen. I read many articles about that but not understand correctly. Because i am beginner in JAVA.
Question1: Should i (create new class) or (implement to current gui or swingworker class) for progressbar?
Question2: Should i fired progress bar first and execute swingworker from progressbar class? or should i execute swingworker first and fired progress bar later and how?
One of the four JDialog class would look something like this without the comments.
package client; import javax.swing.JDialog; @SuppressWarnings("serial") public class AddCustomerDialog extends JDialog implements Dialog{ public AddCustomerDialog () { //Some stuff goes here to set the settings for JDialog instance
I would like to be able to change the locale in my Swing application at runtime and have all the text elements on the GUI update themselves with localized text from a ResourceBundle of the new locale.If there a simple way of achieving this without having to create an event model for all GUI pages?
I have created a jtable with two columns so I need add checkboxes dynamically in to the first column.Bıt I couldn find something like add.How can do this.This is what I have so far
public CheckBoxes(){ table=new JTable(new TableModels()); TableColumnModel columnModel = null; JCheckBox box; for (int i = 0; i <2; i++) {
I've almost finished building an Editor in Java, but i'm a bit stuck on creating a JCheckBox that saves your credentials (as in password only) . I would like it to be on a JPanel under the password input box and above the Login and Register buttons.
Code: Login.java (Main class for this problem)
[URL] ....
The main thing here is using GridLayout, which is what im currently working with but can't seem to get it under the password input box.. check: [URL] ....
how to open a GUI on top of another GUI? I have built a GUI and have a button that when pressed I want to open a new GUI which is another java application within the project, it seems pretty straight forward and I just need to insert 'new [name of application]()'
Button btnEdit = new Button(shell, SWT.NONE); btnEdit.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { new edit(); } }); btnEdit.setBounds(76, 10, 75, 25); btnEdit.setText("Edit");
I find myself asking these two questions because I see them as relating. First question is; I always write
Java Code: f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); mh_sh_highlight_all('java'); (where f is a JFrame object)
to set the close for the JFrame. What I don't get about this is what is going on in the parenthesis. I looked in the Java Documentation, and it says an int goes inside. In that case, I don't really get what the word JFrame is doing there. Overall, please explain what is inside the parenthesis of that line and why it has to be there.The second question is a generic question. I notice a lot of times an object will be created, and as its parameter, you will have to instantiate an object. an example would be
Java Code: Class f = new Class(new Object) mh_sh_highlight_all('java');
What does it mean when an object gets created inside of a new object? Why is putting Java Code: new Object mh_sh_highlight_all('java'); ever necessary when concerning the two parenthesis?
I am trying to add a JMenuBar to this program with just one dropdown to select one option but I am getting an error with the setJMenuBar(menuBar); line as it does not extend JFram. How I would add a menu to this program another way.
public class Calculator extends JPanel implements ActionListener{ private static final long serialVersionUID = 1L; JMenuBar menuBar = new JMenuBar(); JMenu noteMenu = new JMenu("Note"); JMenuItem newNote = new JMenuItem("New Note"); public static final int WIDTH = 350; public static final int HEIGHT = 560;
According to what I read, "when programming in Swing, your GUI creation code should be placed on the Event Dispatch Thread (EDT). This will prevent potential race conditions that could lead to deadlock." (See below for code.)
Why is this? How could making a GUI lead to deadlock?
public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); }
I'm developing a Swing Project and I have a textarea in which the item names will be entered separating with commas. The code has to check every element and fetch the price of it and calculate the total amount and display it in the text field. But Somehow it does not enter the while Loop? Why?
Here is the code
String str = accessories.getText(); accessories.setText(str.toUpperCase()); String[] str_arr = accessories.getText().split(","); float t1 = 0; float t2 = 0; for (int i = 0; i < str_arr.length; i++) { System.out.println(str_arr[i]); System.out.println("
According to what I read, “when programming in Swing, your GUI creation code should be placed on the Event Dispatch Thread (EDT). This will prevent potential race conditions that could lead to deadlock.” (See below for code.)
Why is this? How could making a GUI lead to deadlock?
public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); }
So I have a Jframe that has a set of functions that act on a node. What I want to do is allow the user to expand the gui by creating new sets (copies) of these functions when they have more nodes.I thought of hiding extra sets and making it appear they are adding them by making them visible.
I am trying to implement user input in my dice rolling program but I do not understand where I need to add the actionListener. What I want the program to do is allow the user to click on each roll button and have the output be between 1 and 6. I figured I can put it in the "main" class due to the size of the program but I would like to know the best way to go about adding the actionListener into a sub-class for practice purposes.Here is my code thus far:
package com.jprogs; import java.awt.*; import javax.swing.*; public class DiceGenerator extends JFrame { DiceRollEvent dice = new DiceRollEvent(); // create the roll buttons JButton roll_1 = new JButton("Roll #1"); JButton roll_2 = new JButton("Roll #2"); JButton roll_3 = new JButton("Roll #3"); JButton roll_4 = new JButton("Roll #4"); JButton roll_5 = new JButton("Roll #5"); // create output field for each roll
I have been trying to learn how to use the TabbedPane GUI. I can get the tabs to show up, but the buttons I have placed in each tab do not show up. Why this is not working. I assume that, for some reason, the buttons are not linking with their respective panels, or the panels are not linking to the respective tabs.
