尝试将.txt文件读入数组列表，以进一步将其导入GUI。 .txt文件中的数据用“|”分隔数据由单词和定义组成。 GUI将显示定义，用户将在jText字段中输入答案，程序将根据.txt文件中的实际单词检查用户答案，并记录最后显示的分数。我们对代码的错误感到非常困惑，因为GUI中没有显示任何内容。感谢您的任何答案或建议。
package sat.vocab.practice;
/**
*
* @author Brandon Tavares
*
*/
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
public class SATVocabPractice {
public static void main(String[] args) {
File f = new File("C:/Users/Brandon/Documents/NetBeansProjects/SAT Vocab Practice/src/sat/vocab/practice/Words.txt");
try{
ArrayList<String> lines = get_arraylist_from_file(f);
for(int x = 0; x < lines.size(); x++){
System.out.println(lines.get(x));
}
System.out.println("Reading");
}
catch(Exception e){
e.printStackTrace();
}
}
public static ArrayList<String> get_arraylist_from_file(File f)
throws FileNotFoundException {
Scanner s;
ArrayList<String> list = new ArrayList<String>();
s = new Scanner(f);
while (s.hasNext()) {
System.out.println(s.next());
list.add(s.next());
}
s.close();
return list;
}
}
这是GUI代码。
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package sat.vocab.practice;
/**
*
* @author Brandon
*/
public class MainView extends javax.swing.JFrame {
/**
* Creates new form MainView
*/
public MainView() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
defintionHeader = new javax.swing.JLabel();
definitionLabel = new javax.swing.JLabel();
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jToggleButton1 = new javax.swing.JToggleButton();
score = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setBackground(new java.awt.Color(0, 255, 204));
setCursor(new java.awt.Cursor(java.awt.Cursor.HAND_CURSOR));
setPreferredSize(new java.awt.Dimension(1920, 1080));
defintionHeader.setText("Definition:");
definitionLabel.setText("Definition Here");
jLabel1.setText("Your Answer:");
jTextField1.setText("jTextField1");
jToggleButton1.setText("Submit Answer");
score.setText("0");
jLabel3.setText("Score:");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(63, 63, 63)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(score))
.addGroup(layout.createSequentialGroup()
.addComponent(defintionHeader)
.addGap(18, 18, 18)
.addComponent(definitionLabel))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jToggleButton1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 132, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addContainerGap(130, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(72, 72, 72)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(defintionHeader)
.addComponent(definitionLabel))
.addGap(29, 29, 29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(45, 45, 45)
.addComponent(jToggleButton1)
.addGap(38, 38, 38)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(score))
.addContainerGap(45, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(MainView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(MainView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(MainView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MainView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new MainView().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel definitionLabel;
private javax.swing.JLabel defintionHeader;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField1;
private javax.swing.JToggleButton jToggleButton1;
private javax.swing.JLabel score;
// End of variables declaration
}
答案 0 :(得分：0)
您的代码有异常。试试这个。
public static ArrayList<String> get_arraylist_from_file(File f)
throws FileNotFoundException {
Scanner s;
ArrayList<String> list = new ArrayList<String>();
s = new Scanner(f);
while (s.hasNext()) {
String temp=s.next();
System.out.println(temp);
list.add(temp);
}
s.close();
return list;
}
}
答案 1 :(得分：0)
使用append方法将整个文本文件读入StringBuilder对象，然后将StringBuilder转换为＆＃34; |＆＃34;上的对象数组。然后遍历对象数组并将对象数组的每个部分添加到数组列表中。