gridbaglayout

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 panel_b = new JPanel(); JButton btnB = new JButton("button b"); panel_b.add(btnB); GridBagConstraints c

See below a simple test code using a GridBagLayout (2 rows, 2 component on row 0, 1 component on row 1). Although I have specified weighty to be 0.01 for first row and 1 for second row, the ratio on the screen looks more like 0.3 vs. 0.7. It seems that the height of the first row is resized so that the whole textarea fits in it. How can I reduce the height of the first row, so that the scroll bars of the JScrollPane will appear? public class Test { public static void main(String... args) { String text = "text\n\n\n\n\n\n\n\ntext"; JFrame frame = new JFrame(); JTextArea area; JScrollPane pane;

I have this layout using GridBagLayout : public class Example extends JFrame { public Example() { Border outline = BorderFactory.createLineBorder(Color.black); GridBagLayout gbl = new GridBagLayout(); GridBagConstraints gbc = new GridBagConstraints(); JPanel pane = new JPanel(gbl); gbc.weighty = 1.0; gbc.weightx = 1.0; JLabel unitLbl = new JLabel("Unit"); unitLbl.setBorder(outline); gbc.gridx = 0; gbc.gridy = 0; gbc.ipadx = 30; gbc.ipady = 10; gbl.setConstraints(unitLbl, gbc); pane.add(unitLbl); JLabel typeLbl = new JLabel("Type"); typeLbl.setBorder(outline); gbc.gridx = 0; gbc.gridy = 1; gbc

I am dinamically generating a layout which requires to use relative sizes, the only way I found to do it without using an external Java layout library is GridBagLayout's weightx and weighty. At this point it has been working exactly as I need with one small exception. When I have one column containing two JPanels with a space distribution of 66.6% and 33.3% respectively and then another column with 3 JPanels using 33.3% of the space each one of them, the 33.3% of the first column is not the same as the 33.3% of the second. I need them to be perfectly aligned. Unfortunately this is my first

I would like to create a layout: 2 rows, 1 column. 1st row should occupy 70% height of the window and 2nd row 30% of the window. I achieve this by using weighty attribute of GridBagConstraints . However I have problem with the width of my component, because when I resize application window the component remain in the center, its width is constant and I get a white spaces in the left and right of the component (even if I set fill to BOTH ). This problem does not occur when I change the height of the window (components resize very well and fill full height of the window). Below my constraints: