我创建了一个程序，允许用户选择餐馆的菜单项，并增加了总的每个项目为每个人创建一个双mealTotal的。 我需要在每次进入一个新的人的时间（使用下一个人按钮）来与我所作为一个ArrayList创建tableTotal还添加每个mealTotal。 我似乎无法得到ArrayList中添加比刚刚过去的人的mealTotal更多。 我需要它包括每个人的mealTotal，也就是说，如果有4人，我tableTotal的ArrayList将举行4个独特的价值。 从这里，我想补充所有tableTotal值的拿出整个表的双重价值。 在如何把每个人的mealTotal到我tableTotal ArrayList的任何帮助，将不胜感激！
这里是主类：
import javax.swing.BoxLayout;
import javax.swing.JFrame;
public class MenuApp extends JFrame {
// static JFrame frame;
public static void main(String args[]) {
JFrame aFrame = new MenuApp();
aFrame.setVisible(true);
}
public MenuApp() {
setTitle("Leah Thompson's Restaurant App");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Buttons buttonPanel = new Buttons();
buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.Y_AXIS));
setContentPane(buttonPanel);
pack();
}
}
和按钮类：
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import java.util.ArrayList;
public class Buttons extends JPanel {
private final JTextField nameField;
String[] drinkChoice = {"Coke", "Beer", "Wine"};
String[] appChoice = {"Soup", "Salad", "Brie"};
String[] entreeChoice = {"Pasta", "Steak", "Burger"};
String[] dessertChoice = {"Tiramisu", "Cheesecake", "Chocolate Cake"};
JRadioButton[] drinkButtons = new JRadioButton[drinkChoice.length];
JRadioButton[] appButtons = new JRadioButton[appChoice.length];
JRadioButton[] entreeButtons = new JRadioButton[entreeChoice.length];
JRadioButton[] dessertButtons = new JRadioButton[dessertChoice.length];
ButtonGroup buttonGroupDrink = new ButtonGroup();
ButtonGroup buttonGroupApp = new ButtonGroup();
ButtonGroup buttonGroupEntree = new ButtonGroup();
ButtonGroup buttonGroupDessert = new ButtonGroup();
JButton mealCost;
JButton nextPerson;
JButton submitOrder;
ArrayList<Double> tableTotal = new ArrayList(0);
double mealTotal = 0;
double mealTotal1 = 0;
public Buttons(){
ActionListener nameEntered = new NameEntered();
add(new JLabel("Name (hit enter after typing name)"));
nameField = new JTextField(10);
add(nameField);
nameField.addActionListener(nameEntered);
ActionListener drinkSelection = new DrinkSelectionChangeMade();
ActionListener appSelection = new AppSelectionChangeMade();
ActionListener entreeSelection = new EntreeSelectionChangeMade();
ActionListener dessertSelection = new DessertSelectionChangeMade();
add(new JLabel("Choose a Drink"));
for (int i = 0; i < drinkChoice.length; i++) {
drinkButtons[i] = new JRadioButton(drinkChoice[i]);
drinkButtons[i].getModel().setActionCommand(drinkChoice[i]);
drinkButtons[i].addActionListener(drinkSelection);
buttonGroupDrink.add(drinkButtons[i]);
add(drinkButtons[i]);
// if (i == 0) {
// mealTotal = mealTotal + 2;
// } else if (i == 1) {
// mealTotal = mealTotal + 3;
// } else {
// mealTotal = mealTotal + 5;
// }
}
add(new JLabel("Choose an Appetizer"));
for (int i = 0; i < appChoice.length; i++) {
appButtons[i] = new JRadioButton(appChoice[i]);
appButtons[i].getModel().setActionCommand(appChoice[i]);
appButtons[i].addActionListener(appSelection);
buttonGroupApp.add(appButtons[i]);
add(appButtons[i]);
// if (i == 0) {
// mealTotal = mealTotal + 6;
// } else if (i == 1) {
// mealTotal = mealTotal + 7;
// } else {
// mealTotal = mealTotal + 8;
// }
}
add(new JLabel("Choose an Entree"));
for (int i = 0; i < entreeChoice.length; i++) {
entreeButtons[i] = new JRadioButton(entreeChoice[i]);
entreeButtons[i].getModel().setActionCommand(entreeChoice[i]);
entreeButtons[i].addActionListener(entreeSelection);
buttonGroupEntree.add(entreeButtons[i]);
add(entreeButtons[i]);
// if (i == 0) {
// mealTotal = mealTotal + 12;
// } else if (i == 1) {
// mealTotal = mealTotal + 20;
// } else {
// mealTotal = mealTotal + 10;
// }
}
add(new JLabel("Choose a Dessert"));
for (int i = 0; i < dessertChoice.length; i++) {
dessertButtons[i] = new JRadioButton(dessertChoice[i]);
dessertButtons[i].getModel().setActionCommand(dessertChoice[i]);
dessertButtons[i].addActionListener(dessertSelection);
buttonGroupDessert.add(dessertButtons[i]);
add(dessertButtons[i]);
// if (i == 0) {
// mealTotal = mealTotal + 7;
// } else if (i == 1) {
// mealTotal = mealTotal + 6;
// } else {
// mealTotal = mealTotal + 5;
// }
}
mealCost = new JButton("Total Cost of Meal");
add(mealCost);
ActionListener mealPrice = new MealCostPressed();
mealCost.addActionListener(mealPrice);
nextPerson = new JButton("Next Person");
add(nextPerson);
ActionListener next = new NextPersonPressed();
nextPerson.addActionListener(next);
submitOrder = new JButton("Submit Order");
add(submitOrder);
ActionListener submit = new SubmitPressed();
submitOrder.addActionListener(submit);
//tableTotal.add(mealTotal);
//add(new JLabel("Your total is: " + mealTotal));
}
private class NameEntered implements ActionListener{
@Override
public void actionPerformed(ActionEvent e){
String name = nameField.getText();
System.out.println(name);
}
}
private class DrinkSelectionChangeMade implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
String drink = buttonGroupDrink.getSelection().getActionCommand();
System.out.println(drink + " as a drink");
if(drink == "Coke"){
mealTotal = mealTotal + 1.95;
}
else if(drink == "Beer"){
mealTotal = mealTotal + 2.95;
}
else{
mealTotal = mealTotal + 4.95;
}
}
}
private class AppSelectionChangeMade implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
String app = buttonGroupApp.getSelection().getActionCommand();
System.out.println(app + " as an appetizer");
if(app == "Soup"){
mealTotal = mealTotal + 3.95;
}
else if(app == "Salad"){
mealTotal = mealTotal + 4.95;
}
else{
mealTotal = mealTotal + 7.95;
}
}
}
private class EntreeSelectionChangeMade implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
String entree = buttonGroupEntree.getSelection().getActionCommand();
System.out.println(entree + " as an entree");
if(entree == "Pasta"){
mealTotal = mealTotal + 11.95;
}
else if(entree == "Steak"){
mealTotal = mealTotal + 19.95;
}
else{
mealTotal = mealTotal + 9.95;
}
}
}
private class DessertSelectionChangeMade implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
String dessert = buttonGroupDessert.getSelection().getActionCommand();
System.out.println(dessert + " as a dessert");
if(dessert == "Tiramisu"){
mealTotal = mealTotal + 6.95;
}
else if(dessert == "Cheesecake"){
mealTotal = mealTotal + 5.95;
}
else{
mealTotal = mealTotal + 4.95;
}
tableTotal.add(mealTotal);
}
}
private class NextPersonPressed implements ActionListener{
@Override
public void actionPerformed(ActionEvent e){
//removeAll();
JFrame nextFrame = new MenuApp();
nextFrame.setVisible(true);
System.out.println("Next Customer: ");
}
}
private class MealCostPressed implements ActionListener{
@Override
public void actionPerformed(ActionEvent e){
JOptionPane.showMessageDialog(mealCost, mealTotal);
}
}
private class SubmitPressed implements ActionListener{
@Override
public void actionPerformed(ActionEvent e){
JOptionPane.showMessageDialog(nextPerson, "Thank you for your order. Please Exit Now.");
System.out.println("The total cost for the table is: " + tableTotal);
}
}
}
