gridbaglayout

How do I make the subpanels within my main panel stay where they are when I set one of the subpanels to be invisible? What I have looks like: [ (Panel1) (Panel2) (Panel3) (Panel4) ] When I do panel3.setVisible(false) it then looks like: [ (Panel1) (Panel2) (Panel4) ] I would like it to look like: [ (Panel1) (Panel2) (Panel4) ] I am using the GridBagLayout and my mainPanel declaration looks like: final JPanel panel = new JPanel(new GridBagLayout()); GridBagConstraints c = new GridBagConstraints(); and I add an new panel like: final JTextField valueTextField = new JTextField(); valueTextField

I'm new to Java Swing and I have been struggling to start the GridBagLayout from top left corner so that c.gridx=0 c.gridy=0 will put my object on the top left corner. I'd appreciate if you could help me by telling what I need to do after this point: JPanel panel = new JPanel(new GridBagLayout()); frame.add(panel); GridBagConstraints c = new GridBagConstraints(); I know that I have to use NORTHWEST or FIRST_LINE_START constants, but I don't know how. I tried to do it this way' but it did not realize the constants. frame.getContentPane().add(panel, BorderLayout.NORTHWEST); Thanks for your help.

I am relatively new to swing and I am trying to figure out exactly how it works. Tell me if I am wrong. I have mostly figured out gridx and gridy which is necessary to place a component. You need at least n values of (gridx,gridy) to create an nxn grid. For example (5,5),(3,3),(4,9),(3,10) will create a 3x4 gridspace(4 rows, 3 columns) with the components using the above (gridx,gridy) respectively placed in cells (3,2),(1,2),(2,3),(1,4). weightx and weighty seems to have 2 functions, a >0 value of weightx and weighy stretches the grid cells to the edges(otherwise it's centralised) and we can

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm using GridBagLayout to place my GUI components by the following code, wanting the components lay one by one in a column, without any gaps : import java . awt . GridBagConstraints ; import java . awt . GridBagLayout ; import javax . swing . JButton ; import javax . swing . JFrame ; import javax . swing . JPanel ; public class TestGUI extends JFrame { public TestGUI (){ JPanel bigPanel = new JPanel ( new GridBagLayout ()); JPanel panel_a = new JPanel (); JButton btnA = new JButton ( "button a" ); panel_a . add ( btnA ); JPanel

package qwer ; import java . awt . Button ; import java . awt . Font ; import java . awt . GridBagConstraints ; import java . awt . GridBagLayout ; import java . awt . event . ActionEvent ; import java . awt . event . ActionListener ; import javax . swing . ButtonGroup ; import javax . swing . JCheckBox ; import javax . swing . JFrame ; import javax . swing . JLabel ; import javax . swing . JOptionPane ; import javax . swing . JRadioButton ; public class wenjuan { public static void main ( String [] args ) { JFrame jf = new JFrame (); jf . setSize ( 550 , 650 ); jf . setLocation ( 550 , 100 );