java：基于控制台的学生成绩统计系统代码

创建一个简单的基于控制台的学生成绩统计系统的Java代码示例可以包括以下几个步骤：

import java.util.Scanner;

class Student {
    String name;
    int score;

    // 构造函数
    public Student(String name, int score) {
        this.name = name;
        this.score = score;
    }

    @Override
    public String toString() {
        return "学生姓名: " + name + ", 成绩: " + score;
    }
}

public class GradeCalculator {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        
        System.out.println("请输入学生的数量:");
        int numStudents = scanner.nextInt();

        Student[] students = new Student[numStudents];

        for (int i = 0; i < numStudents; i++) {
            System.out.println("请输入第" + (i+1) + "名学生的姓名和成绩:");
            String name = scanner.next();
            int score = scanner.nextInt();
            
            students[i] = new Student(name, score);
        }

        // 统计最高分和最低分
        int maxScore = Integer.MIN_VALUE;
        int minScore = Integer.MAX_VALUE;
        for (Student student : students) {
            if (student.score > maxScore) {
                maxScore = student.score;
            }
            if (student.score < minScore) {
                minScore = student.score;
            }
        }

        System.out.println("最高分: " + maxScore + " - " + findMaxName(students));
        System.out.println("最低分: " + minScore + " - " + findMinName(students));

        scanner.close();
    }

    private static String findMaxName(Student[] students) {
        int maxIndex = 0;
        for (int i = 1; i < students.length; i++) {
            if (students[i].score > students[maxIndex].score) {
                maxIndex = i;
            }
        }
        return students[maxIndex].name;
    }

    private static String findMinName(Student[] students) {
        int minIndex = 0;
        for (int i = 1; i < students.length; i++) {
            if (students[i].score < students[minIndex].score) {
                minIndex = i;
            }
        }
        return students[minIndex].name;
    }
}

这个程序首先会提示用户输入学生数量、姓名和成绩，然后计算并打印出最高分和最低分，同时显示对应的学生名字。这里我们使用了数组存储学生信息，并通过遍历来查找最高分和最低分对应的姓名。