14.职工信息查询程序 功能要求: 设计职工类，职工信息包括职工号、姓名、性别、年龄、学历、工资、住址、电话等 (自定义)(职工号不重复)。编写一个Java应用程序，实现职工信息从文件staff.txt读取并通过姓名、工号查找指定职工信息。

好的，根据你的要求，这是一个简单的职工信息查询程序实现：

首先，我们需要定义职工类，包含职工号、姓名、性别、年龄、学历、工资、住址、电话等属性。同时，需要覆盖equals和hashCode方法，确保职工号不重复。

public class Staff {
    private int id;
    private String name;
    private String gender;
    private int age;
    private String education;
    private double salary;
    private String address;
    private String phone;

    public Staff(int id, String name, String gender, int age, String education, double salary, String address, String phone) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.education = education;
        this.salary = salary;
        this.address = address;
        this.phone = phone;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getGender() {
        return gender;
    }

    public int getAge() {
        return age;
    }

    public String getEducation() {
        return education;
    }

    public double getSalary() {
        return salary;
    }

    public String getAddress() {
        return address;
    }

    public String getPhone() {
        return phone;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Staff staff = (Staff) o;
        return id == staff.id;
    }

    @Override
    public int hashCode() {
        return Objects.hash(id);
    }
}

接下来，我们需要读取staff.txt文件中的职工信息，并将其存储在一个列表中。

public class StaffManager {
    private List<Staff> staffList = new ArrayList<>();

    public StaffManager() {
        try {
            BufferedReader reader = new BufferedReader(new FileReader("staff.txt"));
            String line;
            while ((line = reader.readLine()) != null) {
                String[] fields = line.split(",");
                int id = Integer.parseInt(fields[0]);
                String name = fields[1];
                String gender = fields[2];
                int age = Integer.parseInt(fields[3]);
                String education = fields[4];
                double salary = Double.parseDouble(fields[5]);
                String address = fields[6];
                String phone = fields[7];
                Staff staff = new Staff(id, name, gender, age, education, salary, address, phone);
                staffList.add(staff);
            }
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public Staff findById(int id) {
        for (Staff staff : staffList) {
            if (staff.getId() == id) {
                return staff;
            }
        }
        return null;
    }

    public Staff findByName(String name) {
        for (Staff staff : staffList) {
            if (staff.getName().equals(name)) {
                return staff;
            }
        }
        return null;
    }
}

最后，我们可以通过调用StaffManager类中的findById或findByName方法，来查找指定职工的信息。

public static void main(String[] args) {
    StaffManager manager = new StaffManager();
    Scanner scanner = new Scanner(System.in);
    System.out.println("请输入要查询的职工编号：");
    int id = scanner.nextInt();
    Staff staff = manager.findById(id);
    if (staff != null) {
        System.out.println(staff.getName() + "的信息如下：");
        System.out.println("职工号：" + staff.getId());
        System.out.println("姓名：" + staff.getName());
        System.out.println("性别：" + staff.getGender());
        System.out.println("年龄：" + staff.getAge());
        System.out.println("学历：" + staff.getEducation());
        System.out.println("工资：" + staff.getSalary());
        System.out.println("住址：" + staff.getAddress());
        System.out.println("电话：" + staff.getPhone());
    } else {
        System.out.println("没有找到职工编号为" + id + "的职工。");
    }
}

当然，我们也可以通过调用findByName方法，来通过职工姓名查找职工信息。