声明集合保存10个Student对象，要求学生具备姓名、年龄、语文和数字成绩，并且按照数学成绩升序、语文成绩升序的规则排序Set集合实现一次。

好的，这是一个比较简单的编程问题，以下是示例代码：

import java.util.Comparator;
import java.util.Set;
import java.util.TreeSet;

public class Main {
    public static void main(String[] args) {
        Set<Student> students = new TreeSet<>(Comparator.comparing(Student::getMathScore).thenComparing(Student::getChineseScore));
        students.add(new Student("张三", 18, 80, 90));
        students.add(new Student("李四", 20, 85, 95));
        students.add(new Student("王五", 19, 90, 80));
        students.add(new Student("赵六", 21, 75, 85));
        students.add(new Student("钱七", 22, 95, 75));
        students.add(new Student("孙八", 23, 70, 90));
        students.add(new Student("周九", 24, 80, 85));
        students.add(new Student("吴十", 25, 85, 80));
        students.add(new Student("郑十一", 26, 90, 95));
        students.add(new Student("陈十二", 27, 75, 90));

        System.out.println(students);
    }
}

class Student {
    private String name;
    private int age;
    private int mathScore;
    private int chineseScore;

    public Student(String name, int age, int mathScore, int chineseScore) {
        this.name = name;
        this.age = age;
        this.mathScore = mathScore;
        this.chineseScore = chineseScore;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public int getMathScore() {
        return mathScore;
    }

    public int getChineseScore() {
        return chineseScore;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", mathScore=" + mathScore +
                ", chineseScore=" + chineseScore +
                '}';
    }
}

这段代码声明了一个名为 `Student` 的类，包含了姓名、年龄、数学成绩和语文成绩等属性，然后声明了一个 `Set` 集合，使用 `TreeSet` 实现，按照数学成绩升序、语文成绩升序的规则排序。最后添加了10个 `Student` 对象，并输出结果。