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POJava/Swing: Trying to get BorderLayout to play nice with GridBagLayout
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copied!<p>I'd like to have a window that has 3 menus, one tied to the left, another tied to the center and the last one tied to the right. Like this:</p> <pre><code>-------------------------------------------- -toolbar1---------toolbar2---------toolbar3- -------------------------------------------- - - - rest of the window does something here - </code></pre> <p>The problem I'm having is that this is the result I get:</p> <pre><code>-------------------------------------------- ---------toolbar1toolbar2toolbar3----------- -------------------------------------------- - - - rest of the window does something here - </code></pre> <p>Here's some sample code (compiles and shows the problem):</p> <pre><code>import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class TestClass extends JFrame { public TestClass() { super("test"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLayout(new BorderLayout()); final JPanel upper = new JPanel(); upper.setLayout(new GridBagLayout()); final GridBagConstraints gbc = new GridBagConstraints(); final JButton toolbar1 = new JButton("toolbar1"); final JButton toolbar2 = new JButton("toolbar2"); final JButton toolbar3 = new JButton("toolbar3"); gbc.gridx = 0; gbc.gridy = 0; gbc.anchor = GridBagConstraints.WEST; upper.add(toolbar1, gbc); gbc.gridx = 1; gbc.anchor = GridBagConstraints.CENTER; upper.add(toolbar2, gbc); gbc.gridx = 2; gbc.anchor = GridBagConstraints.EAST; upper.add(toolbar3, gbc); add(upper, BorderLayout.NORTH); final JPanel something = new JPanel(); something.setBackground(Color.WHITE); something.setPreferredSize(new Dimension(600, 600)); something.repaint(); add(something, BorderLayout.CENTER); pack(); setLocationRelativeTo(null); setVisible(true); } public static void main(String[] args) { final TestClass test = new TestClass(); } } </code></pre> <p>How can I fix it? I thought that by setting the <code>anchor</code> in the GridBagConstraints I'd take care of it, but that didn't work.</p>

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