layout-manager

This question already has an answer here: BoxLayout can't be shared error 4 answers I have initialized MotePanel, Command Panel and LEDPanel before setting their Layout, then how so am I getting this exception. Please help. Exception in thread "main" java.awt.AWTError: BoxLayout can't be shared at javax.swing.BoxLayout.checkContainer(BoxLayout.java:462) at javax.swing.BoxLayout.invalidateLayout(BoxLayout.java:246) at javax.swing.BoxLayout.addLayoutComponent(BoxLayout.java:279) at java.awt.Container.addImpl(Container.java:1107) at java.awt.Container.add(Container.java:974) at javax.swing.JFrame

I can't make the pack() method work. I tried several things. My code looks like this at the moment: Class 1: public static void main( String[] args ) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { JavaGui mygui = new JavaGui(); // mygui.setSize(1154, 753); mygui.setVisible(true); mygui.pack(); Class 2: public class JavaGui extends javax.swing.JFrame { public JavaGui() { getContentPane().setLayout(null); .. getContentPane().add(panelLeft); ... getContentPane().add(panelRight); I tried putting the pack method in everywhere, but it's not going to work with this way of

In the following GridBagLayout code, I'm expecting the specified minimum size of JButton btn2 to be respected when the JFrame is resized to be made smaller. But when I make the JFrame smaller, the btn2 gets smaller than its minimum size and then vanishes. Can someone point me in the right direction of what I'm doing wrong? Maybe I have to set the minimum size of the JPanel that contains the buttons? Any help is appreciated, thanks! JFrame frame = new JFrame(); frame.setSize(400,300); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JPanel panel = new

So what I am trying to go for is having a staggered layout but the first item in the list needs to span two columns. The first two rows are also a fixed height. I have everything working except the first item spanning two columns. I am using the RecyclerView.Adapter with the StaggeredGridLayoutManager. Doesn't seem like it is out of the box functionality. I assume I can make a custom layout manager I'm just not sure where to start. I have tried searching but I can't find anything about how to get items to span multiple columns. The image below is what what I am looking for in the list.

There are 8 layout managers in the Java library alone, and then there's a bunch of 3rd party products as well. The other day, I tried to use SpringLayout and... well, it ain't working out for me. See my other question . So... if you have a Swing app to design, and you want your layout just so , what are your preferred layout managers? Any interesting/useful experiences to relate? Update: Yup, sure I'm aware that different LMs are appropriate for different layouts. But I'd expect that most of you use 1, 2 or maybe 3 for most everything you do, or you swear by a single one that's so versatile

import java.awt.BorderLayout; import java.awt.Component; import javax.swing.JFrame; import javax.swing.border.Border; public class GuiController extends JFrame { private CentreFrameController centreFrameController; private CustomerPage customerPage; private LoginPage loginPage; public GuiController(){ centreFrameController=new CentreFrameController(this); setLayout(new BorderLayout()); add(centreFrameController,BorderLayout.CENTER); setTitle("Courier System-Login Page"); setVisible(true); setSize(550,650); setDefaultCloseOperation(EXIT_ON_CLOSE); } } CentreFrameController import java.awt

I'm trying to build a user interface for a chess game. I've used a GridBagLayout filled with JLabels and the chess pieces are ImageIcons of the JLabels . Now I would like to move the pieces by dragging it on the board. Is there a way to do this with ImageIcons ? Or is there a better way to solve the problem? EDIT: here is a sample code. you can notice that you can move the iconImage, but it doesn't "drag" with the mouse. import java.awt.BorderLayout; import java.awt.Color; import java.awt.Component; import java.awt.Container; import java.awt.Dimension; import java.awt.GridBagConstraints;

I would like to know if there are methods of automatically increasing the font size based on the size of a component. I have this gui here: http://img823.imageshack.us/img823/9140/hz7.png Hovewer if i increase the size of the frame, it becomes like this: http://img259.imageshack.us/img259/6308/eari.png the font size doesn't increase. and i don't have an idea on how to make this work. trashgod Some L&Fs support a sizeVariant , illustrated here with com.apple.laf.AquaLookAndFeel . Alternatively, you can scale the font to fill the space allocated by your chosen layout, as shown here . 来源： https:/

I have browsed around and haven't found a solution that specifically tailors to my situation. I have a panel that I display in a dialog box: //create dialog panel JPanel panel = new JPanel(); panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS)); panel.add(headerPanel); panel.add(type1Panel); panel.add(type2Panel); panel.add(type3Panel); panel.add(type4Panel); panel.add(type5Panel); panel.add(type6Panel); int result = JOptionPane.showConfirmDialog(null, panel, "Please enter values.", JOptionPane.OK_CANCEL_OPTION); The size of the last two panels, type5 & type6, are of equal size so they look