import java.awt.BorderLayout;import java.awt.EventQueue;import java.awt.Font;import java.awt.Graphics;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.net.URL;import javax.swing.JApplet;import javax.swing.JButton;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.SwingConstants;public class WelcomeApplet extends JApplet {    private static final long serialVersionUID = 1L;    public void init() {        EventQueue.invokeLater(new Runnable() {            @Override            public void run() {                setLayout(new BorderLayout());                JLabel label = new JLabel("Hello "+getParameter("greeting"), SwingConstants.CENTER);                label.setFont(new Font("Serif", Font.BOLD, 18));                add(label, BorderLayout.CENTER);                JPanel panel = new JPanel();                JButton cayButton = new JButton("cnblogs");                cayButton.addActionListener(makeAction("http://www.cnblogs.com"));                panel.add(cayButton);                add(panel, BorderLayout.SOUTH);            }            private ActionListener makeAction(final String string) {                return new ActionListener() {                    public void actionPerformed(ActionEvent event) {                        try {                            getAppletContext().showDocument(new URL(string));                        } catch (Exception e) {                            e.printStackTrace();                        }                    }                };            }        });    }}

以上的java代码编译成class文件之后，新建一个index.html，内容如下：

 

一个带有传参，按钮的applet小程序就可以在网页上运行了，显示效果如下：

 

参考文献：  《Core Java 卷1》 第二章