java设一个班有10名学生，每个学生有姓名、学号、成绩等信息，请利用对象数组的概念编程，求平均成绩。

好的，这是一个简单的 Java 编程问题，我可以回答。以下是一个示例代码：

public class Student {
    String name;
    int id;
    double score;

    public Student(String name, int id, double score) {
        this.name = name;
        this.id = id;
        this.score = score;
    }
}

public class Main {
    public static void main(String[] args) {
        Student[] students = new Student[10];
        students[0] = new Student("Tom", 1, 80);
        students[1] = new Student("Jerry", 2, 90);
        students[2] = new Student("Alice", 3, 85);
        students[3] = new Student("Bob", 4, 95);
        students[4] = new Student("David", 5, 70);
        students[5] = new Student("Eva", 6, 75);
        students[6] = new Student("Frank", 7, 88);
        students[7] = new Student("Grace", 8, 92);
        students[8] = new Student("Henry", 9, 87);
        students[9] = new Student("Ivy", 10, 83);

        double sum = 0;
        for (int i = 0; i < students.length; i++) {
            sum += students[i].score;
        }
        double average = sum / students.length;
        System.out.println("The average score is: " + average);
    }
}

这个程序定义了一个 `Student` 类，包含了学生的姓名、学号和成绩等信息。然后在 `Main` 类中创建了一个由 10 个学生组成的数组，并计算了这些学生的平均成绩。