用Java编写Student类，有如下功能：1、学号以各专业、年纪分类自动编号。2、实现以多种条件进行查找，例如，只比较姓名，查找姓“李”的人，查找某年出生的人，查找某省某市的人等。3、增加多门成绩变量；按照专业分别统计不同班级的学生成绩。

在Java中，我们可以创建一个名为`Student`的类来实现这些需求。首先，我们需要包含一些基本属性如姓名、年龄、出生日期、省份、城市以及多门成绩。为了实现自动生成学号，我们可以在类中添加一个静态变量和构造函数来处理：

public class Student {
    private static int autoId = 0;
    private String name;
    private String major;
    private int age;
    private Date birthDate;
    private String province;
    private String city;
    private Map<String, List<Double>> scoresBySubject; // 存储各科成绩

    public Student(String name, String major, int age, String birthDateStr, String province, String city) {
        this.name = name;
        this.major = major;
        this.age = age;
        this.birthDate = new SimpleDateFormat("yyyy-MM-dd").parse(birthDateStr);
        this.province = province;
        this.city = city;
        this.scoresBySubject = new HashMap<>();
        this.autoId = generateAutoId();
    }

    private int generateAutoId() {
        return autoId++;
    }

    // 查找方法，如按姓名、年龄、出生日期和地点查找
    public boolean searchByName(String lastName) {
        return name.contains(lastName);
    }
    
    public boolean searchByAge(int targetAge) {
        return age == targetAge;
    }

    public boolean searchByBirthYear(int targetYear) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(birthDate);
        return calendar.get(Calendar.YEAR) == targetYear;
    }

    public boolean searchByLocation(String targetProvince, String targetCity) {
        return province.equals(targetProvince) && city.equals(targetCity);
    }

    // 添加成绩并统计
    public void addScore(String subject, double score) {
        if (!scoresBySubject.containsKey(subject)) {
            scoresBySubject.put(subject, new ArrayList<>());
        }
        scoresBySubject.get(subject).add(score);
    }

    public Map<String, Double> getAverageScoresByMajor() {
        return scoresBySubject.entrySet().stream()
                .filter(entry -> entry.getKey().startsWith(major))
                .collect(Collectors.toMap(Map.Entry::getKey, entry -> entry.getValue().stream().average().orElse(0)));
    }

    // ...其他相关getter和setter方法
}