编写一个学生和教师数据输入和显示程序，学生数据有编号、姓名、班号、语文成绩、英语成绩、数学成绩，教师数据有编号、姓名、职称和部门。写一个学生类Student，老师类Teacher，老师录入学生成绩，统计输出该同学的平均成绩。用jjava写

以下是一个简单的Java程序，实现了学生和教师数据的输入和显示，以及计算每个学生的平均成绩：

import java.util.Scanner;

class Student {
    private int no;
    private String name;
    private int grade;
    private int chinese;
    private int english;
    private int math;
    
    public Student(int no, String name, int grade) {
        this.no = no;
        this.name = name;
        this.grade = grade;
        this.chinese = 0;
        this.english = 0;
        this.math = 0;
    }
    
    public void setChinese(int chinese) {
        this.chinese = chinese;
    }
    
    public void setEnglish(int english) {
        this.english = english;
    }
    
    public void setMath(int math) {
        this.math = math;
    }
    
    public double getAverage() {
        return (double)(chinese + english + math) / 3;
    }
    
    public String toString() {
        return "学生编号：" + no + "，姓名：" + name + "，班级：" + grade + "，语文成绩：" + chinese + "，英语成绩：" + english + "，数学成绩：" + math + "，平均成绩：" + getAverage();
    }
}

class Teacher {
    private int no;
    private String name;
    private String title;
    private String department;
    
    public Teacher(int no, String name, String title, String department) {
        this.no = no;
        this.name = name;
        this.title = title;
        this.department = department;
    }
    
    public void inputScore(Student student) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入学生 " + student.toString() + " 的语文成绩：");
        int chineseScore = scanner.nextInt();
        student.setChinese(chineseScore);
        System.out.println("请输入学生 " + student.toString() + " 的英语成绩：");
        int englishScore = scanner.nextInt();
        student.setEnglish(englishScore);
        System.out.println("请输入学生 " + student.toString() + " 的数学成绩：");
        int mathScore = scanner.nextInt();
        student.setMath(mathScore);
    }
    
    public String toString() {
        return "教师编号：" + no + "，姓名：" + name + "，职称：" + title + "，部门：" + department;
    }
}

public class Main {
    public static void main(String[] args) {
        Student[] students = new Student[3];
        students[0] = new Student(1, "张三", 1);
        students[1] = new Student(2, "李四", 1);
        students[2] = new Student(3, "王五", 2);
        
        Teacher teacher = new Teacher(1, "张老师", "教授", "计算机科学与技术");
        
        for (int i = 0; i < students.length; i++) {
            teacher.inputScore(students[i]);
        }
        
        for (int i = 0; i < students.length; i++) {
            System.out.println(students[i].toString());
        }
    }
}

程序中定义了一个Student类和一个Teacher类，分别表示学生和教师的数据结构，并提供了相应的方法。在主函数中，首先创建了3个学生对象和1个教师对象，然后通过教师对象的inputScore方法，输入每个学生的成绩。最后，通过循环遍历每个学生，输出其数据和平均成绩。