用java写一个职工信息查询程序 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，我可以给您提供一个简单的职工信息查询程序的Java代码示例，您可以参考。首先，我们需要先创建一个职工类Worker：

public class Worker {
    private String workerNo;    // 职工号
    private String name;        // 姓名
    private String gender;      // 性别
    private int age;            // 年龄
    private String education;   // 学历
    private double salary;      // 工资
    private String address;     // 住址
    private String phone;       // 电话

    // 构造函数
    public Worker(String workerNo, String name, String gender, int age, String education, double salary, String address, String phone) {
        this.workerNo = workerNo;
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.education = education;
        this.salary = salary;
        this.address = address;
        this.phone = phone;
    }

    // getter和setter方法
    public String getWorkerNo() {
        return workerNo;
    }

    public void setWorkerNo(String workerNo) {
        this.workerNo = workerNo;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getEducation() {
        return education;
    }

    public void setEducation(String education) {
        this.education = education;
    }

    public double getSalary() {
        return salary;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }
}

然后，我们需要创建一个工具类来读取staff.txt文件中的职工信息，并将其存储到一个Worker对象的列表中：

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;

public class WorkerUtil {
    // 从文件中读取职工信息并存储到列表中
    public static List<Worker> readWorkersFromFile(String filePath) {
        List<Worker> workers = new ArrayList<>();

        try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
            String line;
            while ((line = reader.readLine()) != null) {
                String[] fields = line.split(",");
                if (fields.length != 8) {
                    continue;
                }

                String workerNo = 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];

                Worker worker = new Worker(workerNo, name, gender, age, education, salary, address, phone);
                workers.add(worker);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return workers;
    }
}

接着，我们需要创建一个主程序类来实现职工信息查询功能：

import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // 从文件中读取职工信息
        List<Worker> workers = WorkerUtil.readWorkersFromFile("staff.txt");

        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("请输入查询方式（1：按姓名查询，2：按职工号查询，0：退出）：");
            int option = scanner.nextInt();
            if (option == 0) {
                break;
            }

            if (option == 1) {
                System.out.println("请输入姓名：");
                String name = scanner.next();
                boolean found = false;
                for (Worker worker : workers) {
                    if (worker.getName().equals(name)) {
                        found = true;
                        System.out.println(worker.getWorkerNo() + "," + worker.getName() + "," + worker.getGender() + "," + worker.getAge() + "," + worker.getEducation() + "," + worker.getSalary() + "," + worker.getAddress() + "," + worker.getPhone());
                    }
                }
                if (!found) {
                    System.out.println("没有找到姓名为" + name + "的职工信息");
                }
            } else if (option == 2) {
                System.out.println("请输入职工号：");
                String workerNo = scanner.next();
                boolean found = false;
                for (Worker worker : workers) {
                    if (worker.getWorkerNo().equals(workerNo)) {
                        found = true;
                        System.out.println(worker.getWorkerNo() + "," + worker.getName() + "," + worker.getGender() + "," + worker.getAge() + "," + worker.getEducation() + "," + worker.getSalary() + "," + worker.getAddress() + "," + worker.getPhone());
                    }
                }
                if (!found) {
                    System.out.println("没有找到职工号为" + workerNo + "的职工信息");
                }
            } else {
                System.out.println("输入有误，请重新输入！");
            }
        }
    }
}

在实现职工信息查询功能之前，我们需要在项目根目录下创建一个staff.txt文件，并将职工信息存储在其中。每行表示一个职工信息，字段之间用逗号分隔，例如：

001,张三,男,28,本科,5000,北京市朝阳区,13800000001
002,李四,女,32,硕士,8000,北京市海淀区,13800000002
003,王五,男,25,本科,4500,北京市西城区,13800000003

然后，我们就可以运行程序，输入查询方式和要查询的信息，即可查询到指定的职工信息了。