java程序Student继承父类Person，建立5个学生对象，根据成绩找出最高总分和最低总分以及排序

好的，针对您的问题，我已经了解了您的需求。下面是解决方案：

首先，我们需要定义两个类：Person 和 Student，其中 Student 继承自 Person。

public class Person {
    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

public class Student extends Person {
    private int mathScore;
    private int englishScore;
    private int chineseScore;

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

    public int getMathScore() {
        return mathScore;
    }

    public void setMathScore(int mathScore) {
        this.mathScore = mathScore;
    }

    public int getEnglishScore() {
        return englishScore;
    }

    public void setEnglishScore(int englishScore) {
        this.englishScore = englishScore;
    }

    public int getChineseScore() {
        return chineseScore;
    }

    public void setChineseScore(int chineseScore) {
        this.chineseScore = chineseScore;
    }

    public int getTotalScore() {
        return mathScore + englishScore + chineseScore;
    }
}

然后，我们可以建立 5 个学生对象，并计算他们的总分。

public static void main(String[] args) {
    Student[] students = {
            new Student("张三", 18, 80, 90, 70),
            new Student("李四", 19, 85, 95, 80),
            new Student("王五", 20, 90, 80, 75),
            new Student("赵六", 21, 70, 75, 80),
            new Student("钱七", 22, 95, 85, 90)
    };

    int maxTotalScore = Integer.MIN_VALUE;
    int minTotalScore = Integer.MAX_VALUE;
    for (Student student : students) {
        int totalScore = student.getTotalScore();
        if (totalScore > maxTotalScore) {
            maxTotalScore = totalScore;
        }
        if (totalScore < minTotalScore) {
            minTotalScore = totalScore;
        }
    }

    System.out.println("最高总分：" + maxTotalScore);
    System.out.println("最低总分：" + minTotalScore);

    Arrays.sort(students, Comparator.comparingInt(Student::getTotalScore).reversed());
    for (Student student : students) {
        System.out.println(student.getName() + " " + student.getAge() + " " + student.getTotalScore());
    }
}

以上就是解决方案，希望能对您有所帮助。