书中有很多的程序清单，其中有的没有main函数。本人是Java刚开始学者，想看看程序的运行效果，但是对于没有main函数的程序不知道怎么运行。问一下各位大神当时是怎么解决的？
程序清单8-3 action/ActionFrame.java

"package action;
import java.awt.Color;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
public class ActionFrame extends JFrame{
	private JPanel buttonPanel;
	private static final int DEFAULT_WIDTH = 300;
	private static final int DEFAULT_HEIGHT = 200;

	public ActionFrame()
	{
		setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

		buttonPanel = new JPanel();

		//define actions
		Action yellowAction = new ColorAction("Yellow", new ImageIcon("yellow-ball.gif"),Color.YELLOW);
		Action blueAction = new ColorAction("Blue", new ImageIcon("blue-ball.gif"),Color.BLUE);
		Action redAction = new ColorAction("Red", new ImageIcon("red-ball.gif"),Color.RED);
		//add buttons for these actions
		buttonPanel.add(new JButton(yellowAction));
		buttonPanel.add(new JButton(blueAction));
		buttonPanel.add(new JButton(redAction));

		//add panel to frame
		add(buttonPanel);

		//associate the Y, B, and R keys with names
		InputMap imap = buttonPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
		imap.put(KeyStroke.getKeyStroke("ctrl Y"), "panel.yellow");
		imap.put(KeyStroke.getKeyStroke("ctrl B"), "panel.blue");
		imap.put(KeyStroke.getKeyStroke("ctrl R"), "panel.red");

		//associate the names with actions
		ActionMap amap = buttonPanel.getActionMap();
		amap.put("panel.yellow", yellowAction);
		amap.put("panel.blue", blueAction);
		amap.put("panel.red", redAction);
	}

	public class ColorAction extends AbstractAction
	{
		/**
		 * Constructs a color action.
		 * @param name the name to show on the button
		 * @param icon the icon to display on the button
		 * @param c the background color
		 */
		public ColorAction(String name, Icon icon, Color c)
		{
			putValue(Action.NAME, name);
			putValue(Action.SMALL_ICON, icon);
			putValue(Action.SHORT_DESCRIPTION, "Set panel color to " + name.toLowerCase());
			putValue("color", c);
		}

		public void actionPerformed(ActionEvent event)
		{
			Color c = (Color) getValue("color");
			buttonPanel.setBackground(c);
		}
	}
}
"

public static void main(String[] args)
	{
		ActionFrame frame = new ActionFrame();
		frame.setVisible(true);
	}