さて、これについてたくさんの質問とたくさんの答えがあることを私は知っています、しかし私はそれらのどれにも本当に運がありませんでした。私は、いくつかの外部ライブラリ（jarファイルとして）も使用するマルチクラス、マルチパッケージプログラムを持っています。プロジェクトをjarファイルとしてエクスポートしました。以下は、必要なライブラリとjarファイルを参照する「index.html」です。これらのファイルはすべて同じディレクトリに配置されており、Webページでアプレットを確認できます：http：//easlnx01.eas.muohio.edu/~whitetc2/Twitter%20Mining%202/
<html>
<head>
<title>Java Example</title>
</head>
<body>
<center>
This is my page<br>
Below you see an applet<br>
<br>
<applet codebase ="." code="main.BasicGUI.class"
archive="twitter.jar, jsch-0-1.1.48.jar, twitter4j-core-2.2.5.jar, sftp.jar"
height="600" width="450"/>
</applet>
</center>
</body>
</html>
私のメインクラス（BasicGUI.java）はJAppletを拡張し、入力に基づいて他のさまざまなクラスを呼び出します。public void init（）もあります。なぜこれが完全に機能しないのか誰か教えてもらえますか？これがアップロードされた私のサイトへのリンクです：http：//easlnx01.eas.muohio.edu/~whitetc2/Twitter%20Mining%202/
ご覧のとおり、アプレットが表示されますが、[ファイル]タブのオプションパネルが機能せず、プログラム自体が実際には機能しません。
これが私のメインのBasicGUI.javaクラスです。
package main;
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.JApplet;
import com.jscape.inet.sftp.SftpException;
import Twitter.SearchTweets;
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
/**
* The GUI for our Twitter Widget. Plans are to eventually
* set this up with a Java Applet to run straight from the
* CC teams website.
* @author Taylor White and Alex Meyer
*/
public class BasicGUI extends JApplet{
//Auto-generated
private static final long serialVersionUID = 1L;
//Aesthetic options, have getters and setters to allow for communication across GUIs
private static int opposite;
private static int maxTweets = 100;
private static boolean sortByLocation = false;
private static boolean isOptionsOpen = false;
// Options GUI, initiated here to avoid multiple open windows
//private OptionsGUI options;
// Initialize all swing objects.
private JPanel northSubPnl1;
private JPanel northSubPnl2;
private JPanel northSubPnl3;
private JPanel northPnl;
private JPanel eastPnl;
private JPanel westPnl;
private JLabel myQuery;
/** TWITTER INITILIAZATIONS **/
private static Twitter.TwitterDataList tweets;
/** END TWITTER INITIALIZATIONS **/
// Buttons
private JButton queryBtn; // Submits the query
private JButton uploadBtn;
// TextField Query
private JTextField txtQuery; // USER Query
// Menu
private JMenuBar mb; // Menu bar
private JMenu mnuFile; // File Entry on Menu bar
private JMenuItem mnuFileOpen;
private JMenuItem mnuFileSave;
private JMenuItem mnuFileOptions;
private JMenuItem mnuItemQuit; // Quit sub item
private JMenu mnuHelp; // Help Menu entry
private JMenuItem mnuItemAbout; // About Entry
//West Panel stuff
private static JList list;
private JScrollPane listScroller;
private JLabel uploadText;
private JCheckBox uploadHTML;
private JCheckBox uploadXML;
private JCheckBox uploadJSON;
//East Panel stuff
private JTextArea user;
private static JTextArea sysStatus;
private JScrollPane statusScroll;
private static JTextArea settings;
private static String keywords;
/*
* Getters and setters for aesthetic options
*/
public static boolean isSortedByLocation() {
return sortByLocation;
}
public static void setSortedByLocation(boolean toSort) {
sortByLocation = toSort;
}
public static int getMaxTweets() {
return maxTweets;
}
public static void setMaxTweets(int num) {
maxTweets = num;
}
public static boolean isOptionsOpen() {
return isOptionsOpen;
}
public static void setOptionsOpen(boolean option) {
isOptionsOpen = option;
}
/*
* CONSTRUCTOR
*/
public void init() {
sysStatus = new JTextArea (1, 20);
sysStatus.setEditable(false);
northSubPnl1 = new JPanel();
northSubPnl2 = new JPanel();
northSubPnl3 = new JPanel();
northPnl = new JPanel();
eastPnl = new JPanel();
westPnl = new JPanel();
myQuery = new JLabel ("You have no queries yet");
// TwitterDataList
tweets = new Twitter.TwitterDataList ();
// Buttons
queryBtn = new JButton("Submit Query"); // Submits the query
uploadBtn = new JButton("Upload Tweets"); // Uploads both XML and HTML files.
// TextField Query
txtQuery = new JTextField(); // USER Query
// Menu
mb = new JMenuBar(); // Menu bar
mnuFile = new JMenu("File");
mnuFileOpen = new JMenuItem("Open");
mnuFileSave = new JMenuItem("Save");
mnuFileOptions = new JMenuItem("Options");
mnuItemQuit = new JMenuItem("Quit");
mnuHelp = new JMenu("Help");
mnuItemAbout = new JMenuItem("About");
//West Panel stuff
String[] tweetsString = new String[2000];
list = new JList (tweetsString);
uploadText = new JLabel("Upload as:");
uploadHTML = new JCheckBox("HTML", false);
uploadXML = new JCheckBox("XML", false);
uploadJSON = new JCheckBox("JSON", false);
//East Panel stuff
user = new JTextArea("Username: ");
keywords = new String ();
statusScroll = new JScrollPane(sysStatus);
statusScroll.setPreferredSize(new Dimension(200, 150));
statusScroll.getVerticalScrollBar().setValue(statusScroll.getVerticalScrollBar().getMaximum());
settings = new JTextArea(1, 20);
// Set menu bar
this.setJMenuBar(mb);
//Build Menus
this.buildMenus();
// West Panel
this.westPnlSetup();
// East Panel
this.eastPnlSetup();
// Add objects to respective panels
this.northPnlSetup();
// Setup Main Frame
this.setLayout();
// Add Listeners
this.addListeners();
//Finish Launch
Toolkit toolkit = Toolkit.getDefaultToolkit ();
Dimension dim = toolkit.getScreenSize();
int width = (int)dim.getWidth();
int height = (int)dim.getHeight();; //worry about location later. This is fine for testing purposes
this.setBounds(width/2-400, height/2-400, 500, 800); //Arbitrarily chosen for a 1600 by 900 screen
this.setVisible(true);
}
public class ButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
if (e.getSource() == queryBtn) {
if (txtQuery.getText().length() > 2) {
myQuery.setText("Your current query: " + txtQuery.getText());
tweets = Twitter.SearchTweets.customSearch(txtQuery.getText()); // SEARCH
if (SearchTweets.getKeywords() != null) {
if (tweets.getSize() > 0)
tweets = Twitter.SearchTweets.sortByKeyword(tweets, SearchTweets.getKeywords()); // Sort right after.
else {
print("No tweets found!");
System.out.println("No tweets found!");
}
}
if (tweets.getSize() > 0) {
list.setListData(tweets.toArray(maxTweets));
sysStatus.append("Top Tweet: " + tweets.get(0).getTweet());
System.out.println("Top Tweet: " + tweets.get(0).getTweet());
//tweets.saveHTML(txtQuery.getText()); NOT SAVING BY DEFAULT ANY MORE
}
else {
print("No tweets found!");
System.out.println("No tweets found!");
}
}
else {
print("Please input at least a 3 letter word to begin a query.");
System.out.println("Please input at least a 3 letter word to begin a query.");
}
}
// Not sure how to make directory path independent of system. change path to your local project to get open and save to work
else if (e.getSource() == mnuFileOpen) {
final JFileChooser fc = new JFileChooser("C:/Users/Meyer/Desktop/YATE/DataCollection");
int returnVal = fc.showOpenDialog(mnuFile);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
tweets = Twitter.TwitterDataList.load(file.getName());
if (SearchTweets.getKeywords() != null) {
tweets = Twitter.SearchTweets.sortByKeyword(tweets, SearchTweets.getKeywords());
}
list.setListData(tweets.toArray(maxTweets));
myQuery.setText("Your current query: " + file.getName());
}
}
else if (e.getSource() == mnuFileSave) {
final JFileChooser fc = new JFileChooser("C:/Users/Meyer/Desktop/YATE/DataCollection");
int returnVal = fc.showSaveDialog(mnuFile);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
tweets.writeHTML(file.getName());
}
}
else if (e.getSource() == mnuFileOptions) {
if (!isOptionsOpen()) {
new OptionsGUI();
setOptionsOpen(true);
}
}
else if (e.getSource() == uploadBtn) {
if (uploadHTML.isSelected() ||
uploadXML.isSelected() || uploadJSON.isSelected()) {
try {
tweets.saveAll(txtQuery.getText(), uploadHTML.isSelected(),
uploadXML.isSelected(), uploadJSON.isSelected());
} catch (SftpException exception) {
System.out.println("Could not upload. Try another time.");
print("Could not upload. Try another time.");
}
}
else if (tweets.getSize() ==0) {
JOptionPane.showMessageDialog(null, "There are no tweets to upload!");
}
else {
JOptionPane.showMessageDialog(null, "You need to select a file type in order to upload.");
}
}
}
}
public class KeyChecker implements KeyListener {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER)
queryBtn.doClick();
}
public void keyReleased(KeyEvent arg0) {
//ignore
}
public void keyTyped(KeyEvent arg0) {
//ignore
}
}
public class ListListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
try {
user.setText(tweets.get(list.getSelectedIndex()).toString());
} catch (ArrayIndexOutOfBoundsException error) {
user.setText(tweets.get(list.getFirstVisibleIndex()).toString());
}
}
}
public class ListenMenuQuit implements ActionListener{
public void actionPerformed(ActionEvent e){
System.exit(0);
}
}
public class ListenCloseWdw extends WindowAdapter{
public void windowClosing(WindowEvent e){
System.exit(0);
}
}
public void buildMenus () {
mnuFile.add(mnuFileOpen);
mnuFile.add(mnuFileSave);
mnuFile.add(mnuFileOptions);
mnuFile.add(mnuItemQuit); // Create Quit line
mnuHelp.add(mnuItemAbout); // Create About line
mb.add(mnuFile); // Add Menu items to form
mb.add(mnuHelp);
}
/**
* North Panel
*/
public void northPnlSetup () {
northPnl.setLayout(new BoxLayout (northPnl, BoxLayout.Y_AXIS));
northSubPnl1.add(txtQuery);
northSubPnl1.add(queryBtn);
txtQuery.setColumns(20);
northPnl.add(northSubPnl1);
}
/**
* Sets Layout of GUI
*/
public void setLayout () {
// Setup Main Frame
this.getContentPane().setLayout(new BorderLayout());
this.getContentPane().add(northPnl, BorderLayout.NORTH);
this.getContentPane().add(westPnl, BorderLayout.WEST);
this.getContentPane().add(eastPnl, BorderLayout.EAST);
}
/*
* Adds action listeners
*/
public void addListeners(){
mnuItemQuit.addActionListener(new ListenMenuQuit());
mnuFileOpen.addActionListener(new ButtonListener());
mnuFileSave.addActionListener(new ButtonListener());
mnuFileOptions.addActionListener(new ButtonListener());
queryBtn.addActionListener(new ButtonListener());
uploadBtn.addActionListener(new ButtonListener());
list.addListSelectionListener(new ListListener());
txtQuery.addKeyListener(new KeyChecker());
}
public void westPnlSetup () {
westPnl.add(new JLabel ("Tweets"));
westPnl.add(new JLabel("-------"));
westPnl.setLayout(new BoxLayout (westPnl, BoxLayout.Y_AXIS));
listScroller = new JScrollPane(list);
listScroller.setPreferredSize(new Dimension(200, 100));
list.setListData(tweets.toArray(maxTweets));
list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
list.setLayoutOrientation(JList.VERTICAL);
list.setVisibleRowCount(10);
westPnl.add(listScroller);
// setup upload button and panel for check boxes
northSubPnl2.setLayout(new BoxLayout(northSubPnl2, BoxLayout.Y_AXIS));
northSubPnl2.add(uploadBtn);
uploadBtn.setAlignmentX(CENTER_ALIGNMENT);
northSubPnl2.add(uploadText);
uploadText.setAlignmentX(CENTER_ALIGNMENT);
northSubPnl2.add(northSubPnl3);
// setup check boxes
northSubPnl3.setLayout(new BoxLayout(northSubPnl3, BoxLayout.X_AXIS));
northSubPnl3.add(uploadHTML);
northSubPnl3.add(uploadXML);
northSubPnl3.add(uploadJSON);
westPnl.add(northSubPnl2);
}
public void eastPnlSetup () {
eastPnl.setLayout(new BoxLayout (eastPnl, BoxLayout.Y_AXIS));
eastPnl.add(new JLabel("Metadata"));
eastPnl.add(new JLabel("-------"));
user = new JTextArea(1, 20);
user.setPreferredSize(new Dimension (200,50));
user.setEditable(false);
user.append("User: \n");
user.append("Date: \n");
user.append("Location: \n");
user.append("Relevance: \n");
user.append("Tweet: ");
user.setWrapStyleWord(true);
user.setLineWrap(true);
eastPnl.add(user);
eastPnl.add(new JLabel("Settings"));
eastPnl.add(new JLabel(new JLabel("-------").getText()));
String keywords = "";
for (int i = 0; i < SearchTweets.getKeywords().size(); i++) {
keywords = SearchTweets.getKeywords().get(i) + ", ";
}
try {
keywords = keywords.substring(0, keywords.length()-2);
} catch (StringIndexOutOfBoundsException e) {
keywords = ""; // There are no keywords if this happens.
}
/*
* || THIS IS IF IN WHITE ||
* || ||
* VV VV
*/
settings.setPreferredSize(new Dimension (200,50));
settings.setEditable(false);
BasicGUI.setSettingsPaneValues();
settings.setWrapStyleWord(true);
settings.setLineWrap(true);
eastPnl.add(settings);
sysStatus.append(">");
eastPnl.add(new JLabel("System Status "));
eastPnl.add(new JLabel(new JLabel("-------").getText()+"----"));
sysStatus.setWrapStyleWord(true);
sysStatus.setLineWrap(true);
eastPnl.add(statusScroll);
//this.redirectSystemStreams(); // REDIRECTS the text of console to the sysStatus box. NOT REAL TIME.
/* END WHITE */
}
public static void setSettingsPaneValues () {
keywords = new String();
for (int i = 0; i < SearchTweets.getKeywords().size(); i++) {
keywords += SearchTweets.getKeywords().get(i) + ", ";
}
if (SearchTweets.getKeywords().size()== 0) {
keywords = "none";
}
else {
try {
keywords = keywords.substring(0, keywords.length()-2);
} catch (StringIndexOutOfBoundsException e) {
keywords = ""; // There are no keywords if this happens.
}
}
settings.setText("Sort by location: " + isSortedByLocation() +
"\nTimeout (in seconds): " + SearchTweets.getTimeout() +
"\nMaximum tweets shown: " + getMaxTweets() +
"\nKeywords: " + keywords);
if (SearchTweets.getKeywords() != null && tweets.getSize() > 0) {
tweets = Twitter.SearchTweets.sortByKeyword(tweets, SearchTweets.getKeywords());
}
list.setListData(tweets.toArray(maxTweets));
list.repaint();
}
/**
* returns string value of the keywords used
* @return returns instance variable keywords
* @author Taylor
*/
public static String getKeywords () {
return keywords;
}
/**
* Updates the sysStatus textArea
* @param text
*/
private void updateTextArea(final String text) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
opposite++;
opposite = opposite%2;
if (!text.equalsIgnoreCase(".")){ // So I can do the ". . ." sequence to signify waiting.
if (opposite%2 == 1) {
sysStatus.append("\n>" + text);
}
else sysStatus.append(text);
}
else sysStatus.append(text);
}
});
}
/**
* Allows other classes to print to sysStatus
*/
public static void print (String text) {
opposite++;
opposite = opposite%2;
if (!text.equalsIgnoreCase(".")){ // So I can do the ". . ." sequence to signify waiting.
//if (opposite%2 == 1) {
sysStatus.append("\n\n>" + text);
sysStatus.repaint();
//}
//else sysStatus.append("\n" + text);
}
else sysStatus.append(text);
sysStatus.invalidate();
sysStatus.repaint();
}
/**
* Redirects all console output to the textarea.
*/
@SuppressWarnings("unused")
private void redirectSystemStreams() {
OutputStream out = new OutputStream() {
@Override
public void write(int b) throws IOException {
updateTextArea(String.valueOf((char) b));
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
updateTextArea(new String(b, off, len));
}
@Override
public void write(byte[] b) throws IOException {
write(b, 0, b.length);
}
};
System.setOut(new PrintStream(out, true));
System.setErr(new PrintStream(out, true));
}
}