colorbeanusing.java

j2ee关于BEANS的多个例子

import javax.swing.*;

public class ColorBeanUsing
{
	JFrame frm;
	JPanel pan;
	JLabel lab;
	ColorBean cb;

	public ColorBeanUsing()
	{
		frm=new JFrame("Test Color Bean");
		pan=new JPanel();
		frm.getContentPane().add(pan);
		cb=new ColorBean();
		lab=new JLabel("你好");
		pan.add(cb);
		ColorListen cl = new ColorListen();
		cb.addColorChangeListener(cl);
		pan.add(lab);	
		frm.setSize(300,300);
		frm.setVisible(true);
	}	
	public static void main(String args[])
	{
		new ColorBeanUsing();
	}
	
	class ColorListen  implements ColorChangeListener
	{
		public void colorChanged(ColorChangeEvent evt)
		{
			Object obj=evt.getSource();
			if (obj==cb)
			{
				pan.setBackground(evt.color);
			}
			
		}
	}
}