我正在研究我的最终项目，我们正在进行一项测验，以找出人们喜欢什么样的派对......但我不能让我按顺序运行并使用这个正确的面板！
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.imageio.ImageIO;
import java.io.File;
import java.io.IOException;
import java.awt.*;
import javax.swing.ImageIcon;
import java.awt.Dimension;
import javax.swing.JPanel;
import java.awt.GridLayout;
import javax.swing.BoxLayout;
import java.awt.Component;
import java.awt.Container;
import javax.swing.JOptionPane;
import java.applet.Applet;
//This class is where we set up all the questions.
class party{
int num_questions = 10;
int panel_number = 0;
int party_score = 0;
JFrame frame = new JFrame();
String AnswerA;
String AnswerB;
String AnswerC;
String AnswerD;
JButton button1;
JButton button2;
JButton button3;
JButton button4;
String target_word;
String user_text;
String label_text;
JLabel question_frame;
JPanel pane;
JPanel panel;
public void image_question(){
//This panel will display four images that the user will choose from.
panel = new JPanel();
panel.setLayout(new BorderLayout());
label_text = "Which party appeals to you the most?";
question_frame = new JLabel(label_text);
question_frame.setFont(new Font("Calibri", Font.PLAIN, 20));
panel.add(question_frame, BorderLayout.NORTH);
button1 = new JButton();
JPanel inner = new JPanel();
inner.setLayout(new GridLayout(0, 2));
button1.setIcon(new ImageIcon("ball.jpg")); //img1
button1.setPreferredSize(new Dimension(100, 100));
button1.setActionCommand("1");
inner.add(button1);
button2 = new JButton();
button2.setIcon(new ImageIcon("christmas_party.jpg"));
button2.setPreferredSize(new Dimension(100, 100));
button2.setActionCommand("2");
inner.add(button2);
button3 = new JButton();
button3.setIcon(new ImageIcon("college_party.jpg"));
button3.setPreferredSize(new Dimension(100, 100));
button3.setActionCommand("3");
inner.add(button3);
button4 = new JButton();
button4.setIcon(new ImageIcon("kid_party.jpg"));
button4.setPreferredSize(new Dimension(100, 100));
button4.setActionCommand("4");
inner.add(button4);
panel.add(inner, BorderLayout.CENTER);
//ImageIcon icon = new ImageIcon("Alex.jpg");
//frame.getContentPane().add(new JLabel(icon), BorderLayout.EAST);
//frame.setVisible(true);
frame.add(panel);
ActionListener al = new click();
button1.addActionListener(al);
button2.addActionListener(al);
button3.addActionListener(al);
button4.addActionListener(al);
frame.setSize(600, 600);
frame.setVisible(true);
frame.setBackground(Color.white);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void multiple_choice_question(){
//This panel displays a 4 answer multiple choice question that they user will choose from.
pane = new JPanel();
pane.setLayout(new BorderLayout());
label_text = "What music would you prefer at a party?";
question_frame = new JLabel(label_text);
pane.add(question_frame, BorderLayout.NORTH);
JPanel center = new JPanel();
GridLayout grid = new GridLayout(0,2);
center.setLayout(grid);
pane.add(center, BorderLayout.CENTER);
AnswerA = "1";
AnswerB = "2";
AnswerC = "3";
AnswerD = "4";
ActionListener al = new click();
addAButton(AnswerA, center, al, "1");
addAButton(AnswerB, center, al, "2");
addAButton(AnswerC, center, al, "3");
addAButton(AnswerD, center, al, "4");
frame.add(pane);
frame.setSize(600, 600);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void input_question(){
//This panel will display a question and chance for the user to input their answer.
user_text = JOptionPane.showInputDialog(null, "Describe your ideal party");
target_word = "music";
if (user_text.indexOf(target_word) >=0){
System.out.println("ho ho ho");
}
}
public void party() {
panel_number++;
if (panel_number == 1){
image_question();
}
if(panel_number == 2){
multiple_choice_question();
}
if(panel_number == 3){
input_question();
}
/* else if (panel_number == 4){
image_question();
}
else if(panel_number == 5){
multiple_choice_question();
}
else if(panel_number == 6){
input_question();
}*/
}
private static void addAButton(String text, Container container, ActionListener al, String actionCommand) {
JButton button = new JButton(text);
button.setAlignmentX(Component.CENTER_ALIGNMENT);
container.add(button);
button.addActionListener(al);
button.setActionCommand(actionCommand);
}
public static void main(String args[]) {
party myGUI = new party();
myGUI.party();
}
class ClassParty{
//This class will read txt documents created by users and suggest a party that everyone would enjoy!
}
class click implements ActionListener{
public void actionPerformed(ActionEvent event){
party partier = new party();
if (event.getActionCommand().equals("1")){
party_score++;
}
else if (event.getActionCommand().equals("2")){
party_score++;
}
else if (event.getActionCommand().equals("3")){
party_score++;
}
else if (event.getActionCommand().equals("4")){
party_score++;
}
System.out.println(panel_number);
frame.dispose();
party();
//System.out.println(party_score);
/* creates a GUI that presents the user with a question with clickable answers that gives you the next question
when you finish answering. It plays jeapordy theme music and has a picture Alex Trabeck. It has a status bar
that tells you how close you are to finishing the program. */
}
}
}
当我运行我的代码时，它会运行image_question两次，然后运行input_question并退出。我无法让multiple_choice_question工作。
答案 0 :(得分：0)
我使用debug修改它并逐步执行每个命令。调试效果很好，你应该尝试一下。调试很关键，因为它显示实际上已达到multiple_choice_question（），即使GUI看起来像第一个GUI。它缩小了bug的来源。
public void multiple_choice_question(){
frame=new JFrame(); <----add this and everything seems to be working
pane = new JPanel();
pane.setLayout(new BorderLayout());
label_text = "What music would you prefer at a party?";
...