用java设计一个简单的学校人事管理系统,管理教师和学生信息。实现教师与学生基本信息的添加、删除、修改、查询。其中编号、姓名、性别、出生日期为共有的，教师包括部门、职称、工资；学生包括高考分数、专业field、班级等。

好的，以下是一个简单的学校人事管理系统的Java代码：

import java.util.ArrayList;
import java.util.Scanner;

class Person {
    private int id;
    private String name;
    private String gender;
    private String birthdate;

    public Person(int id, String name, String gender, String birthdate) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.birthdate = birthdate;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getGender() {
        return gender;
    }

    public String getBirthdate() {
        return birthdate;
    }

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

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

    public void setBirthdate(String birthdate) {
        this.birthdate = birthdate;
    }

    @Override
    public String toString() {
        return "ID: " + id + ", Name: " + name + ", Gender: " + gender + ", Birthdate: " + birthdate;
    }
}

class Teacher extends Person {
    private String department;
    private String title;
    private double salary;

    public Teacher(int id, String name, String gender, String birthdate, String department, String title, double salary) {
        super(id, name, gender, birthdate);
        this.department = department;
        this.title = title;
        this.salary = salary;
    }

    public String getDepartment() {
        return department;
    }

    public String getTitle() {
        return title;
    }

    public double getSalary() {
        return salary;
    }

    public void setDepartment(String department) {
        this.department = department;
    }

    public void setTitle(String title) {
        this.title = title;
    }

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

    @Override
    public String toString() {
        return super.toString() + ", Department: " + department + ", Title: " + title + ", Salary: " + salary;
    }
}

class Student extends Person {
    private double entranceExamScore;
    private String field;
    private String className;

    public Student(int id, String name, String gender, String birthdate, double entranceExamScore, String field, String className) {
        super(id, name, gender, birthdate);
        this.entranceExamScore = entranceExamScore;
        this.field = field;
        this.className = className;
    }

    public double getEntranceExamScore() {
        return entranceExamScore;
    }

    public String getField() {
        return field;
    }

    public String getClassName() {
        return className;
    }

    public void setEntranceExamScore(double entranceExamScore) {
        this.entranceExamScore = entranceExamScore;
    }

    public void setField(String field) {
        this.field = field;
    }

    public void setClassName(String className) {
        this.className = className;
    }

    @Override
    public String toString() {
        return super.toString() + ", Entrance Exam Score: " + entranceExamScore + ", Field: " + field + ", Class Name: " + className;
    }
}

public class SchoolManagementSystem {
    private static ArrayList<Teacher> teachers = new ArrayList<>();
    private static ArrayList<Student> students = new ArrayList<>();
    private static Scanner scanner = new Scanner(System.in);

    private static void addTeacher() {
        System.out.println("Enter teacher information:");
        System.out.print("ID: ");
        int id = scanner.nextInt();
        scanner.nextLine();
        System.out.print("Name: ");
        String name = scanner.nextLine();
        System.out.print("Gender: ");
        String gender = scanner.nextLine();
        System.out.print("Birthdate: ");
        String birthdate = scanner.nextLine();
        System.out.print("Department: ");
        String department = scanner.nextLine();
        System.out.print("Title: ");
        String title = scanner.nextLine();
        System.out.print("Salary: ");
        double salary = scanner.nextDouble();
        Teacher teacher = new Teacher(id, name, gender, birthdate, department, title, salary);
        teachers.add(teacher);
        System.out.println("Teacher added successfully!");
    }

    private static void addStudent() {
        System.out.println("Enter student information:");
        System.out.print("ID: ");
        int id = scanner.nextInt();
        scanner.nextLine();
        System.out.print("Name: ");
        String name = scanner.nextLine();
        System.out.print("Gender: ");
        String gender = scanner.nextLine();
        System.out.print("Birthdate: ");
        String birthdate = scanner.nextLine();
        System.out.print("Entrance Exam Score: ");
        double entranceExamScore = scanner.nextDouble();
        scanner.nextLine();
        System.out.print("Field: ");
        String field = scanner.nextLine();
        System.out.print("Class Name: ");
        String className = scanner.nextLine();
        Student student = new Student(id, name, gender, birthdate, entranceExamScore, field, className);
        students.add(student);
        System.out.println("Student added successfully!");
    }

    private static void deleteTeacher() {
        System.out.print("Enter teacher ID to delete: ");
        int id = scanner.nextInt();
        boolean isDeleted = false;
        for (Teacher teacher : teachers) {
            if (teacher.getId() == id) {
                teachers.remove(teacher);
                isDeleted = true;
                break;
            }
        }
        if (isDeleted) {
            System.out.println("Teacher deleted successfully!");
        } else {
            System.out.println("Teacher not found!");
        }
    }

    private static void deleteStudent() {
        System.out.print("Enter student ID to delete: ");
        int id = scanner.nextInt();
        boolean isDeleted = false;
        for (Student student : students) {
            if (student.getId() == id) {
                students.remove(student);
                isDeleted = true;
                break;
            }
        }
        if (isDeleted) {
            System.out.println("Student deleted successfully!");
        } else {
            System.out.println("Student not found!");
        }
    }

    private static void modifyTeacher() {
        System.out.print("Enter teacher ID to modify: ");
        int id = scanner.nextInt();
        boolean isModified = false;
        for (Teacher teacher : teachers) {
            if (teacher.getId() == id) {
                System.out.println("Enter new teacher information:");
                scanner.nextLine();
                System.out.print("Name: ");
                String name = scanner.nextLine();
                System.out.print("Gender: ");
                String gender = scanner.nextLine();
                System.out.print("Birthdate: ");
                String birthdate = scanner.nextLine();
                System.out.print("Department: ");
                String department = scanner.nextLine();
                System.out.print("Title: ");
                String title = scanner.nextLine();
                System.out.print("Salary: ");
                double salary = scanner.nextDouble();
                teacher.setName(name);
                teacher.setGender(gender);
                teacher.setBirthdate(birthdate);
                teacher.setDepartment(department);
                teacher.setTitle(title);
                teacher.setSalary(salary);
                isModified = true;
                break;
            }
        }
        if (isModified) {
            System.out.println("Teacher modified successfully!");
        } else {
            System.out.println("Teacher not found!");
        }
    }

    private static void modifyStudent() {
        System.out.print("Enter student ID to modify: ");
        int id = scanner.nextInt();
        boolean isModified = false;
        for (Student student : students) {
            if (student.getId() == id) {
                System.out.println("Enter new student information:");
                scanner.nextLine();
                System.out.print("Name: ");
                String name = scanner.nextLine();
                System.out.print("Gender: ");
                String gender = scanner.nextLine();
                System.out.print("Birthdate: ");
                String birthdate = scanner.nextLine();
                System.out.print("Entrance Exam Score: ");
                double entranceExamScore = scanner.nextDouble();
                scanner.nextLine();
                System.out.print("Field: ");
                String field = scanner.nextLine();
                System.out.print("Class Name: ");
                String className = scanner.nextLine();
                student.setName(name);
                student.setGender(gender);
                student.setBirthdate(birthdate);
                student.setEntranceExamScore(entranceExamScore);
                student.setField(field);
                student.setClassName(className);
                isModified = true;
                break;
            }
        }
        if (isModified) {
            System.out.println("Student modified successfully!");
        } else {
            System.out.println("Student not found!");
        }
    }

    private static void searchTeacher() {
        System.out.print("Enter teacher ID to search: ");
        int id = scanner.nextInt();
        boolean isFound = false;
        for (Teacher teacher : teachers) {
            if (teacher.getId() == id) {
                System.out.println(teacher);
                isFound = true;
                break;
            }
        }
        if (!isFound) {
            System.out.println("Teacher not found!");
        }
    }

    private static void searchStudent() {
        System.out.print("Enter student ID to search: ");
        int id = scanner.nextInt();
        boolean isFound = false;
        for (Student student : students) {
            if (student.getId() == id) {
                System.out.println(student);
                isFound = true;
                break;
            }
        }
        if (!isFound) {
            System.out.println("Student not found!");
        }
    }

    private static void displayAllTeachers() {
        for (Teacher teacher : teachers) {
            System.out.println(teacher);
        }
    }

    private static void displayAllStudents() {
        for (Student student : students) {
            System.out.println(student);
        }
    }

    public static void main(String[] args) {
        System.out.println("Welcome to School Management System!");
        while (true) {
            System.out.println("1. Add Teacher\n2. Add Student\n3. Delete Teacher\n4. Delete Student\n5. Modify Teacher\n6. Modify Student\n7. Search Teacher\n8. Search Student\n9. Display All Teachers\n10. Display All Students\n11. Exit");
            System.out.print("Enter your choice: ");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    addTeacher();
                    break;
                case 2:
                    addStudent();
                    break;
                case 3:
                    deleteTeacher();
                    break;
                case 4:
                    deleteStudent();
                    break;
                case 5:
                    modifyTeacher();
                    break;
                case 6:
                    modifyStudent();
                    break;
                case 7:
                    searchTeacher();
                    break;
                case 8:
                    searchStudent();
                    break;
                case 9:
                    displayAllTeachers();
                    break;
                case 10:
                    displayAllStudents();
                    break;
                case 11:
                    System.out.println("Thank you for using School Management System!");
                    System.exit(0);
                    break;
                default:
                    System.out.println("Invalid choice!");
                    break;
            }
        }
    }
}

这个系统使用了面向对象的编程风格，定义了一个 `Person` 类作为教师和学生的基类，然后分别定义了 `Teacher` 和 `Student` 类。在 `SchoolManagementSystem` 类中，我们使用了一个 `ArrayList` 来存储教师和学生的信息，并实现了添加、删除、修改、查询和显示所有教师和学生的功能。用户可以通过在控制台输入不同的选项来执行不同的操作。