GridBagEx1.java

package com.bao.examples.gui;

import java.awt.*;
import java.util.*;
import java.applet.Applet;

public class GridBagEx1 extends Applet
{

	protected void makebutton(String name, GridBagLayout gridbag, GridBagConstraints c)
	{
		Button button = new Button(name);
//		gridbag.setConstraints(button, c);
//		add(button);
		
		add(button, c);
	}

	public void init()
	{
		GridBagLayout gridbag = new GridBagLayout();
		GridBagConstraints c = new GridBagConstraints();

		setFont(new Font("SansSerif", Font.PLAIN, 14));
		setLayout(gridbag);

		c.fill = GridBagConstraints.BOTH;
		c.weightx = 1.0;
		makebutton("Button1", gridbag, c);
		makebutton("Button2", gridbag, c);
		makebutton("Button3", gridbag, c);

		c.gridwidth = GridBagConstraints.REMAINDER; // end row
		makebutton("Button4", gridbag, c);

		c.weightx = 0.0; // reset to the default
		makebutton("Button5", gridbag, c); // another row

		c.gridwidth = GridBagConstraints.RELATIVE; // next-to-last in row
		makebutton("Button6", gridbag, c);

		c.gridwidth = GridBagConstraints.REMAINDER; // end row
		makebutton("Button7", gridbag, c);

		c.gridwidth = 1; // reset to the default
		c.gridheight = 2;
		c.weighty = 1.0;
		makebutton("Button8", gridbag, c);

		c.weighty = 0.0; // reset to the default
		c.gridwidth = GridBagConstraints.REMAINDER; // end row
		c.gridheight = 1; // reset to the default
		makebutton("Button9", gridbag, c);
		makebutton("Button10", gridbag, c);

		setSize(300, 100);
	}

	public static void main(String args[])
	{
		Frame f = new Frame("GridBag Layout Example");
		GridBagEx1 ex1 = new GridBagEx1();

		ex1.init();

		f.add("Center", ex1);
		f.pack();
		f.setSize(f.getPreferredSize());
		f.show();
	}
}