jpanel

I have a general question regarding java GUI. If I have several components that I want to add to a JFrame, should i put them directly inside the JFrame, or add them to a JPanel, and then add the panel to the frame? If adding the components to a JPanel first is the best, why? I usually do this, then I understood that I have no idea why/if this is more optional then adding directly to the frame. JFrame also have layout managers, so it's possible to get them in the correct position. When you add components to the frame you add the components to the content pane of the frame. The content pane is a

I have created a JScrollPane with a JPanel inside it and I want to add JPanel/JLabel/Other objects after pressing the button. For example after three button presses I want to get something like this: I tried myJPane.add(testLabel) with testlabel.setBounds() but no result, I don't want to use GridLayout because of the unchangeable sizes. I would like it if the added objects had different sizes - adjusted to the text content. What should I use for it and how? Thanks in advance. Best regards, Tom. Here is a JPanel inside a JScrollPane that adds JLabel s to it when pressing the button: public

I want to have a JFrame, where on the left and the right there is a border that has the color black and a width of withfOfJFrame/10. Now, my try at it looks like this: JFrame f = new JFrame(); f.setSize(800, 600); f.setLayout(new BorderLayout()); JPanel leftBorder = new JPanel(); JPanel rightBorder = new JPanel(); leftBorder.setBackground(Color.black); rightBorder.setBackground(Color.black); leftBorder.setSize(f.getWidth()/10, f.getHeight()); rightBorder.setSize(f.getWidth()/10, f.getHeight()); JPanel center = new JPanel(); center.setBackground(Color.red); f.add(leftBorder, BorderLayout.WEST);

Now I know there are many, many questions on this and I've read a dozen. But I've just hit a wall, I can't make heads or tails of it. Heres my question. I have 3 Panel classes. ConfigurePanel.java ConnectServerPanel.java RunServerPanel.java and my JFrame class StartUPGUI.java This is what is initialised at startup private void initComponents() { jPanel1 = new javax.swing.JPanel(); startUp = new sjdproject.GUI.ConfigurePanel(); runServer = new sjdproject.GUI.RunServerPanel(); serverConnect = new sjdproject.GUI.ConnectServerPanel(); setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING