用java写一个对象数组 （1）输入多个学生的学号，姓名，数学，语文，英语成绩。 （2）按总分从大到小排序并输出。 （3）在main方法中进行测试。

以下是Java代码：

import java.util.Scanner;

public class Student {
private String id;
private String name;
private double mathScore;
private double chineseScore;
private double englishScore;
private double totalScore;

public Student(String id, String name, double mathScore, double chineseScore, double englishScore) {
this.id = id;
this.name = name;
this.mathScore = mathScore;
this.chineseScore = chineseScore;
this.englishScore = englishScore;
this.totalScore = mathScore + chineseScore + englishScore;
}

public String getId() {
return id;
}

public String getName() {
return name;
}

public double getMathScore() {
return mathScore;
}

public double getChineseScore() {
return chineseScore;
}

public double getEnglishScore() {
return englishScore;
}

public double getTotalScore() {
return totalScore;
}
}

public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("请输入学生人数：");
int n = scanner.nextInt();

Student[] students = new Student[n];
for (int i = 0; i < n; i++) {
System.out.print("请输入第" + (i + 1) + "个学生的学号：");
String id = scanner.next();
System.out.print("请输入第" + (i + 1) + "个学生的姓名：");
String name = scanner.next();
System.out.print("请输入第" + (i + 1) + "个学生的数学成绩：");
double mathScore = scanner.nextDouble();
System.out.print("请输入第" + (i + 1) + "个学生的语文成绩：");
double chineseScore = scanner.nextDouble();
System.out.print("请输入第" + (i + 1) + "个学生的英语成绩：");
double englishScore = scanner.nextDouble();
students[i] = new Student(id, name, mathScore, chineseScore, englishScore);
}

for (int i = 0; i < n - 1; i++) {
for (int j = i + 1; j < n; j++) {
if (students[i].getTotalScore() < students[j].getTotalScore()) {
Student temp = students[i];
students[i] = students[j];
students[j] = temp;
}
}
}

System.out.println("按总分从大到小排序后的学生信息如下：");
for (int i = 0; i < n; i++) {
System.out.println("学号：" + students[i].getId() + "，姓名：" + students[i].getName() +
"，数学成绩：" + students[i].getMathScore() + "，语文成绩：" + students[i].getChineseScore() +
"，英语成绩：" + students[i].getEnglishScore() + "，总分：" + students[i].getTotalScore());
}
}
}