我已经发布了一个关于如何从文件中读取并从该文件中返回一个随机单词的问题，每个人都一直告诉我使用“List words = new ArrayList();” 我确实尝试过使用它，但它不起作用！
我什么都试过了！我对java很陌生，因为我还是个学生！所以互联网是我最后的选择，教科书没用......
我要做的就是从该文件中返回一个随机字符串，然后将其用作猜测词
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.ArrayList;
import java.util.Random;
import java.util.*;
public final class Hangman extends JFrame implements ActionListener {
int i = 0;
static JPanel panel;
static JPanel panel2;
static JPanel panel3;
static JPanel panel4;
public Hangman() {
JButton[] buttons = new JButton[26];
panel = new JPanel(new GridLayout(0, 9));
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
JButton btnRestart = new JButton("Restart");
btnRestart.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
JButton btnNewWord = new JButton("Add New Word");
btnNewWord.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
FileWriter fw = new FileWriter("Words.txt", true);
PrintWriter pw = new PrintWriter(fw, true);
String word = JOptionPane
.showInputDialog("Please enter a word: ");
pw.println(word);
pw.close();
} catch (IOException ie) {
System.out.println("Error Thrown" + ie.getMessage());
}
}
});
JButton btnHelp = new JButton("Help");
btnHelp.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String message = "The word to guess is represented by a row of dashes, giving the number of letters and category of the word. \nIf the guessing player suggests a letter which occurs in the word, the other player writes it in all its correct positions. \nIf the suggested letter does not occur in the word, the other player draws one element of the hangman diagram as a tally mark."
+ "\n"
+ "\nThe game is over when:"
+ "\nThe guessing player completes the word, or guesses the whole word correctly"
+ "\nThe other player completes the diagram";
JOptionPane.showMessageDialog(null, message, "Help",
JOptionPane.INFORMATION_MESSAGE);
}
});
JButton btnExit = new JButton("Exit");
btnExit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
JLabel lblWord = new JLabel();
ImageIcon icon = new ImageIcon(
"D:\\Varsity College\\Prog212Assign1_10-013803\\images\\Hangman1.jpg");
JLabel label = new JLabel();
label.setIcon(icon);
String b[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K",
"L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W",
"X", "Y", "Z" };
for (i = 0; i < buttons.length; i++) {
buttons[i] = new JButton(b[i]);
panel.add(buttons[i]);
}
panel2.add(label);
panel3.add(btnRestart);
panel3.add(btnNewWord);
panel3.add(btnHelp);
panel3.add(btnExit);
panel4.add(lblWord);
}
public void readWord() {
try {
BufferedReader reader = new BufferedReader(new FileReader(
"Words.txt"));
String line = reader.readLine();
List<String> words = new ArrayList<String>();
while (line != null) {
String[] wordsLine = line.split(" ");
for (String word : wordsLine) {
words.add(word);
}
line = reader.readLine();
}
Random rand = new Random(System.currentTimeMillis());
String randomWord = words.get(rand.nextInt(words.size()));
} catch (Exception e) {
}
}
public static void main(String[] args) {
Hangman frame = new Hangman();
Box mainPanel = Box.createVerticalBox();
frame.setContentPane(mainPanel);
mainPanel.add(panel, BorderLayout.NORTH);
mainPanel.add(panel2);
mainPanel.add(panel4);
mainPanel.add(panel3);
frame.pack();
frame.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
throw new UnsupportedOperationException("Not supported yet.");
}
}