突然间，对JAVA也找到点感觉了。

书上没有那段代码，我自己修修补补弄完全了呢。。。。

就是感觉体系有点宏大，不要急，慢慢玩~！~~

这个世界很精彩哟~~：



　　QuizCard.java

package QuizCard.sky.com;

public class QuizCard {

private String qStr;
private String aStr;

QuizCard (String s1, String s2) {
qStr = s1;
aStr = s2;

}

String getQuestion() {
return qStr;

}
String  getAnswer() {
return aStr;

}

}

QuizCardBuilder.java

package QuizCard.sky.com;
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.io.*;

public class QuizCardBuilder {

private JTextArea question;
private JTextArea answer;
private ArrayList<QuizCard> cardList;
private JFrame frame;

public static void main (String[] args) {
QuizCardBuilder builder = new QuizCardBuilder();
builder.go();
}

public void go() {
frame = new JFrame("Quiz Card Builder");
JPanel mainPanel = new JPanel();
Font bigFont = new Font("sanserif", Font.BOLD, 24);
question = new JTextArea(6, 20);
question.setLineWrap(true);
question.setWrapStyleWord(true);
question.setFont(bigFont);

JScrollPane qScroller = new JScrollPane(question);
qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

answer = new JTextArea(6, 20);
answer.setLineWrap(true);
answer.setWrapStyleWord(true);
answer.setFont(bigFont);

JScrollPane aScroller = new JScrollPane(answer);
aScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
aScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

JButton nextButton = new JButton("Next Card");

cardList = new ArrayList<QuizCard>();

JLabel qLabel = new JLabel("Question:");
JLabel aLabel = new JLabel("Answer:");

mainPanel.add(qLabel);
mainPanel.add(qScroller);
mainPanel.add(aLabel);
mainPanel.add(aScroller);
mainPanel.add(nextButton);
nextButton.addActionListener(new NextCardListener());
JMenuBar menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("File");
JMenuItem newMenuItem = new JMenuItem("New");
JMenuItem saveMenuItem = new JMenuItem("Save");

newMenuItem.addActionListener(new NewMenuListener());
saveMenuItem.addActionListener(new SaveMenuListener());

fileMenu.add(newMenuItem);
fileMenu.add(saveMenuItem);
menuBar.add(fileMenu);

frame.setJMenuBar(menuBar);
frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
frame.setSize(500, 600);
frame.setVisible(true);

}

public class NextCardListener implements ActionListener {
public void actionPerformed(ActionEvent ev) {
QuizCard card = new QuizCard(question.getText(), answer.getText());
cardList.add(card);
clearCard();
}
}
public class SaveMenuListener implements ActionListener {
public void actionPerformed(ActionEvent ev) {
QuizCard card = new QuizCard(question.getText(), answer.getText());
cardList.add(card);

JFileChooser fileSave = new JFileChooser();
fileSave.showSaveDialog(frame);
saveFile(fileSave.getSelectedFile());

}
}

public class NewMenuListener implements ActionListener {
public void actionPerformed(ActionEvent ev) {
cardList.clear();
clearCard();
}
}

private void clearCard() {
question.setText("");
answer.setText("");
question.requestFocus();
}

private void saveFile(File file) {
try {
BufferedWriter writer = new BufferedWriter(new FileWriter(file));

for(QuizCard card:cardList) {
writer.write(card.getQuestion() + "/");
writer.write(card.getAnswer() + "\n");
}
writer.close();
} catch(IOException ex) {
System.out.println("couldn't write the cardList out");
ex.printStackTrace();
}
}

}

QuizCardPlayer.java

package QuizCard.sky.com;
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.io.*;

public class QuizCardPlayer {
private JTextArea display;
private JTextArea answer;
private ArrayList<QuizCard> cardList;
private QuizCard currentCard;
private int currentCardIndex;
private JFrame frame;
private JButton nextButton;
private boolean isShowAnswer;

public static void main(String[] args) {
// TODO Auto-generated method stub
QuizCardPlayer reader = new QuizCardPlayer();
reader.go();

}
public void go() {
frame = new JFrame("Quiz Card Player");
JPanel mainPanel = new JPanel();
Font bigFont = new Font("sanserif", Font.BOLD, 24);

display = new JTextArea(10, 20);
display.setFont(bigFont);

display.setLineWrap(true);
display.setEditable(false);

JScrollPane qScroller = new JScrollPane(display);
qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
nextButton = new JButton("Show Question");
mainPanel.add(qScroller);
mainPanel.add(nextButton);
nextButton.addActionListener(new NextCardListener());

JMenuBar menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("File");
JMenuItem loadMenuItem = new JMenuItem("Load card set");
loadMenuItem.addActionListener(new OpenMenuListener());
fileMenu.add(loadMenuItem);
menuBar.add(fileMenu);
frame.setJMenuBar(menuBar);
frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
frame.setSize(640, 500);
frame.setVisible(true);
}

public class NextCardListener implements ActionListener {
public void actionPerformed(ActionEvent ev) {
if (isShowAnswer){
display.setText(currentCard.getAnswer());
nextButton.setText("Next Card");
isShowAnswer = false;
} else {
if (currentCardIndex < cardList.size()) {
showNextCard();
} else {
display.setText("That was last card");
nextButton.setEnabled(false);
}
}
}
}

public class OpenMenuListener implements ActionListener {
public void actionPerformed(ActionEvent ev) {
JFileChooser fileOpen = new JFileChooser();
fileOpen.showOpenDialog(frame);
loadFile(fileOpen.getSelectedFile());
}
}

private void loadFile(File file) {
cardList = new ArrayList<QuizCard>();
try {
BufferedReader reader = new BufferedReader(new FileReader(file));
String line = null;
while ((line = reader.readLine()) != null) {
makeCard(line);
}
reader.close();
} catch (Exception ex) {
System.out.println("couldn't read the card file");
ex.printStackTrace();
}
}

private void makeCard(String lineToParse) {
String[] result = lineToParse.split("/");
QuizCard card = new QuizCard(result[0], result[1]);
cardList.add(card);
System.out.println("made a card");
}

private void showNextCard() {
currentCard = cardList.get(currentCardIndex);
currentCardIndex++;
display.setText("Show Answer");
isShowAnswer = true;
}

}