如何使用Java制作小型投票系统

class Option {
    private String name;
    private int votes;
<pre class='brush:java;toolbar:false;'>public Option(String name) {
    this.name = name;
    this.votes = 0;
}

public void increment() {
    this.votes++;
}

// getter方法
public String getName() { return name; }
public int getVotes() { return votes; }

class VotingSystem {
    private List<Option> options = new ArrayList<>();
<pre class='brush:java;toolbar:false;'>public void addOption(String name) {
    options.add(new Option(name));
}

public void vote(int index) {
    if (index >= 0 && index < options.size()) {
        options.get(index).increment();
    } else {
        System.out.println("无效选项！");
    }
}

public void showResults() {
    System.out.println("\n--- 投票结果 ---");
    for (int i = 0; i < options.size(); i++) {
        Option opt = options.get(i);
        System.out.println((i+1) + ". " + opt.getName() + " : " + opt.getVotes() + " 票");
    }
}

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        VotingSystem vs = new VotingSystem();
<pre class='brush:java;toolbar:false;'>    // 添加初始选项
    vs.addOption("Java");
    vs.addOption("Python");
    vs.addOption("Go");

    while (true) {
        System.out.println("\n1. 投票  2. 查看结果  3. 退出");
        System.out.print("请选择操作：");
        int choice = scanner.nextInt();

        switch (choice) {
            case 1:
                System.out.println("选项列表：");
                for (int i = 0; i < 3; i++) {
                    System.out.println((i+1) + ". " + vs.getOptions().get(i).getName());
                }
                System.out.print("请输入选项编号：");
                int opt = scanner.nextInt() - 1;
                vs.vote(opt);
                break;
            case 2:
                vs.showResults();
                break;
            case 3:
                System.out.println("谢谢参与！");
                scanner.close();
                return;
            default:
                System.out.println("无效输入");
        }
    }
}