Java GUI编程示例：解决常见问题与实践

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 *     notice, this list of conditions and the following disclaimer.
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package misc;

/*
 * This relies on having the Java Look and Feel Graphics Repository
 * (jlfgr-1_0.jar) in the class path.  You can download this file
 * from http://java.sun.com/developer/techDocs/hi/repository/.
 * Put it in the class path using one of the following commands
 * (assuming jlfgr-1_0.jar is in a subdirectory named jars):
 *
 *   java -cp .;jars/jlfgr-1_0.jar ActionDemo [Microsoft Windows]
 *   java -cp .:jars/jlfgr-1_0.jar ActionDemo [UNIX]
 *
 */

import javax.swing.AbstractAction;
import javax.swing.Action;

import javax.swing.JToolBar;
import javax.swing.JButton;
import javax.swing.ImageIcon;

import javax.swing.JMenuItem;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JMenu;
import javax.swing.JMenuBar;

import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;