Java Reference
In-Depth Information
// Row One - Three Buttons
button = new JButton("One");
addComponent(frame, button, 0, 0, 1, 1,
GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Two");
addComponent(frame, button, 1, 0, 1, 1,
GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Three");
addComponent(frame, button, 2, 0, 1, 1,
GridBagConstraints.CENTER, GridBagConstraints.BOTH);
// Row Two - Two Buttons
button = new JButton("Four");
addComponent(frame, button, 0, 1, 2, 1,
GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Five");
addComponent(frame, button, 2, 1, 1, 2,
GridBagConstraints.CENTER, GridBagConstraints.BOTH);
// Row Three - Two Buttons
button = new JButton("Six");
addComponent(frame, button, 0, 2, 1, 1,
GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Seven");
addComponent(frame, button, 1, 2, 1, 1,
GridBagConstraints.CENTER, GridBagConstraints.BOTH);
frame.setSize(500, 200);
frame.setVisible(true);
}
};
EventQueue.invokeLater(runner);
}
private static void addComponent(Container container, Component component,
int gridx, int gridy, int gridwidth, int gridheight, int anchor,
int fill) {
GridBagConstraints gbc = new GridBagConstraints(gridx, gridy,
gridwidth, gridheight, 1.0, 1.0, anchor, fill, insets, 0, 0);
container.add(component, gbc);
}
}
Most of the work in Listing 10-1 is done by the helper method
addComponent()
, which
creates a set of constraints for the component to be added to the container.
