使用Java实现在线考试系统的监考员管理功能

public class Invigilator {
    private String name;
    private String id;
    private String gender;
    private String contact;

    public Invigilator(String name, String id, String gender, String contact) {
        this.name = name;
        this.id = id;
        this.gender = gender;
        this.contact = contact;
    }

    // Getter and setter methods...
}

import java.util.ArrayList;
import java.util.List;

public class InvigilatorManager {
    private List<Invigilator> invigilators;

    public InvigilatorManager() {
        invigilators = new ArrayList<>();
    }

    // 添加监考员
    public void addInvigilator(Invigilator invigilator) {
        invigilators.add(invigilator);
    }

    // 删除监考员
    public void deleteInvigilator(String id) {
        for (Invigilator invigilator : invigilators) {
            if (invigilator.getId().equals(id)) {
                invigilators.remove(invigilator);
                break;
            }
        }
    }

    // 修改监考员信息
    public void updateInvigilator(String id, Invigilator invigilator) {
        for (int i = 0; i < invigilators.size(); i++) {
            if (invigilators.get(i).getId().equals(id)) {
                invigilators.set(i, invigilator);
                break;
            }
        }
    }

    // 查找监考员
    public Invigilator findInvigilator(String id) {
        for (Invigilator invigilator : invigilators) {
            if (invigilator.getId().equals(id)) {
                return invigilator;
            }
        }
        return null;
    }

    // 获取所有监考员
    public List<Invigilator> getAllInvigilators() {
        return invigilators;
    }
}

public class Main {
    public static void main(String[] args) {
        InvigilatorManager manager = new InvigilatorManager();
        
        // 添加监考员
        Invigilator invigilator1 = new Invigilator("张三", "001", "男", "13888888888");
        manager.addInvigilator(invigilator1);

        // 查找监考员
        Invigilator invigilator = manager.findInvigilator("001");
        System.out.println(invigilator.getName());  // 输出：张三

        // 修改监考员信息
        Invigilator invigilator2 = new Invigilator("李四", "001", "男", "13999999999");
        manager.updateInvigilator("001", invigilator2);

        // 删除监考员
        manager.deleteInvigilator("001");
        
        // 获取所有监考员
        List<Invigilator> invigilators = manager.getAllInvigilators();
        System.out.println(invigilators.size());  // 输出：0
    }
}