Intermediate Java(32) - Getting the Data from the HTML File

import java.net.*;

import java.util.*;

import java.awt.*;

import java.applet.*;

import javax.swing.*;

import javax.swing.event.*;

public class Website extends JApplet {

private HashMap<String,URL> websiteInfo;

private ArrayList<String> titles;

private JList mainList;

//init

public void init(){

websiteInfo = new HashMap<String,URL>();

titles = new ArrayList<String>();

grabHTMLInfo();

add(new JLabel("What website do you want to visit?"),BorderLayout.NORTH);

mainList = new JList(titles.toArray());

mainList.addListSelectionListener(

new ListSelectionListener(){

public void valueChanged(ListSelectionEvent event){

Object object = mainList.getSelectedValue();

URL newDocument = websiteInfo.get(object);

AppletContext browser = getAppletContext();

browser.showDocument(newDocument);

}

}

);

add(new JScrollPane(mainList),BorderLayout.CENTER); → 放置mainList在JScrollPane

}

//get website info

private void grabHTMLInfo(){

String title;

String address;

URL url;

int counter = 0;

title = getParameter("title"+counter); → 因為在test.html的參數稱為title

while(title != null){

address = getParameter("address"+counter);→ 因為在test.html的參數稱為address

try{

url = new URL(address);

websiteInfo.put(title, url); → 把title和url放在websiteInfo

titles.add(title);

}catch(MalformedURLException urlException){

urlException.printStackTrace();

}

++counter;

title = getParameter("title"+counter);

}

}

}