jframe

I've spent a bit of time browsing Stack Overflow and the internet looking for the answer to my question, but I found all the answers hard to understand and I was quite unsure if any of them related to my problem, so I decided I needed help in the right context. I am creating a program that will give a series of solutions based on a particular type of graph inputted. I am sincerely struggling with taking the data from my JComboBox in the first JFrame, and displaying it in the second. I have two classes, GraphEquationSolverGUI and DefineEquation. I am using the Netbeans IDE and

i am new to Java . i was just trying to load image as background in JFrame . What i wanted to do is get the image from C Drive(that is not my workspace) so what i did in Board.java : ImageIcon i = new ImageIcon("C:/image.png"); img =i.getImage(); and did try to paint it something like this: public void paint(Graphics g ) { super.paint(g); Graphics2D g2d= (Graphics2D) g; g2d.drawImage(img, 0, 100, null); } And then i am calling in my main class like this public static void main(String[] args) { JFrame frame= new JFrame(" Game") ; frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame

Is it safe to call the dispose() method of a JFrame from a different thread (not the EDT)? No. It may work or it may cause problems. Just wrap the method in a SwingUtilities.invokeLater(...) and don't worry about it. No, Swing is not thread safe. Use something like Runnable doWorkRunnable = new Runnable() { public void run() { myFrame.dispose(); } }; SwingUtilities.invokeLater(doWorkRunnable); 来源： https://stackoverflow.com/questions/1725661/is-it-safe-to-dispose-a-jframe-from-a-different-thread-in-java

I have created a frame x1 which has a panel p1. When x1 is loaded, checkboxes are added dynamically to p1. The number of checkboxes added to p1 depend on the number of data values in the database table(t1) that satisfy a particular criteria. There is a button b1 on frame x1. When b1 is clicked,it displays another frame x2 in which data values of the database table t1 can be modified. A button 'update' in x2,updates t1 to reflect the changes made to its data values. After modification,when x2 is closed I want the panel p1 in frame x1 to be updated automatically to reflect the changes made to

I have tried a lot, but can't seem to get it to work. I was told to use EDT with the following example. SwingUtilities.invokeLater(new Runnable() { public void run() { // Modify the GUI here } }); I have read on this topic a lot and still don't understand. I get what a thread is, but the .invokeLater still makes no sense to me. Honestly if you can explain in detail this it would be a big help! Goal of Program: To get the randomly generated key that is constantly created every second to update itself afterward in the GUI. John Vint So there is an EDT (Event Dispatch Thread). All actions that

Hey everyone. I'm trying to make a swing GUI with a button and a label on it. im using a border layout and the label ( in the north field ) shows up fine, but the button takes up the rest of the frame (it's in the center field). any idea how to fix this? You have to add the button to another panel, and then add that panel to the frame. It turns out the BorderLayout expands what ever component is in the middle Your code should look like this now: Before public static void main( String [] args ) { JLabel label = new JLabel("Some info"); JButton button = new JButton("Ok"); JFrame frame = ...