simpleapplet.java

精通从JavaScript到Jsp范例程序设计

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class simpleApplet extends Applet
{
	Choice choice1 = new Choice();
	Label textColor = new Label();
	String str;
	int index=0;
	Color[] color = { Color.blue, Color.yellow, Color.black, Color.green, Color.red };
		
	public void init()
	{
		setLayout(null);
		setSize(400,120);
		choice1.addItem("BLUE");
		choice1.addItem("YELLOW");
		choice1.addItem("BLACK");
		choice1.addItem("GREEN");
		choice1.addItem("RED");
		add(choice1);
		choice1.setBounds(192,84,87,25);
		textColor.setText("Text Color :");
		textColor.setAlignment(Label.RIGHT);
		add(textColor);
		textColor.setBounds(108,84,72,24);
		SimpleItem simpleItem = new SimpleItem();
		choice1.addItemListener(simpleItem);
		str=getParameter("name");
	}
	
	public void paint(Graphics g) {
	  g.setFont(new Font( "", Font.BOLD|Font.ITALIC , 36));
	  g.setColor(color[index]);
    g.drawString(str, 20, 44);
  }

	class SimpleItem implements ItemListener
	{
		public void itemStateChanged(ItemEvent event)
		{
			Object object = event.getSource();
			if (object == choice1)
				choice1ItemStateChanged(event);
		}
	}

	void choice1ItemStateChanged(ItemEvent event)
	{
		index = ((Choice)event.getSource()).getSelectedIndex();
		repaint();
	}
}