为什么我的向量不打印字符串？ [重复]

Question

我正在研究向量，在练习一些练习时，我陷入了这个特定的练习，我的代码似乎没有打印名称字符串，我不知道为什么。在最终项目中，我必须仅打印平均数 >=6 的学生的姓名，因为通过打印批准的平均数而不是姓名，如果代码功能正常，则姓名不会打印检查！ 你们能帮我解决一下吗？

这是主要课程：

package Program;

import java.util.Scanner;
import java.util.Locale;
import Entities.Student;

public class Program {

    public static void main(String[] args) {

        Locale.setDefault(Locale.US);
        Scanner sc = new Scanner(System.in);

        String name;
        double grade1;
        double grade2;
        double average;

        System.out.printf("how many students will you enter? ");
        int n = sc.nextInt();

        Student[] vect = new Student[n]; // vector that will store the students created

        for (int i = 0; i < vect.length; i++) {
            System.out.printf("imput the name, first and second grade for the student number %d%n ", i + 1);
            name = sc.nextLine(); // reads the name
            sc.nextLine();
            grade1 = sc.nextDouble();
            grade2 = sc.nextDouble();
            average = (grade1 + grade2) / 2;
            vect[i] = new Student(name, grade1, grade2, average);
        }

        for (int i = 0; i < vect.length; i++) {

            if (vect[i].getAverage() >= 6.0) {
                System.out.printf("%s%n", vect[i].getName());
                System.out.printf("%.2f%n", vect[i].getAverage());
            }
        }
    }
}

这是

Student

类的代码：

package Entities;

public class Student {
    private String name;
    private double grade1;
    private double grade2;
    private double average;

    public Student(String name, double grade1, double grade2, double average) {
        this.name = name;
        this.grade1 = grade1;
        this.grade2 = grade2;
        this.average = average;
    }

    public String getName() {
        return name;
    }

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

    public double getGrade1() {
        return grade1;
    }

    public void setGrade1(double grade1) {
        this.grade1 = grade1;
    }

    public double getGrade2() {
        return grade2;
    }

    public void setGrade2(double grade2) {
        this.grade2 = grade2;
    }

    public double getAverage() {
        return average;
    }

    public void setAverage(double average) {
        this.average = average;
    }

}

控制台日志及返回如下：

how many students will you enter? 5
imput the name, first and second grade for the student number 1
 John
10.0
9.0
imput the name, first and second grade for the student number 2
 Mary
5.0
4.5
imput the name, first and second grade for the student number 3
 Peter
8.5
9.5
imput the name, first and second grade for the student number 4
 Carl
9.9
7.5
imput the name, first and second grade for the student number 5
 Patricia
2.5
8.0

9.50

9.00

8.70

示例中条目的预期输出应该是：

John
9.5
Peter
9.0
Carl
8.70

Answer 1

@Getter
@RequiredArgsConstructor
public final class Student {

    private final String name;
    private final double grade1;
    private final double grade2;
    private final double avg;

}

public class Program {

    public static void main(String... args) {
        Scanner scan = new Scanner(System.in);
        scan.useLocale(Locale.US);

        System.out.print("How many students will you enter? ");
        int total = scan.nextInt();
        Student[] students = readStudents(total, scan);

        for (int i = 0; i < students.length; i++) {

            if (students[i].getAvg() >= 6.0) {
                System.out.printf("%s%total", students[i].getName());
                System.out.printf("%.2f%total", students[i].getAvg());
            }
        }
    }

    private static Student[] readStudents(int total, Scanner scan) {
        Student[] students = new Student[total];

        for (int i = 0; i < students.length; i++)
            students[i] = readStudent(i + 1, scan);

        return students;
    }

    private static Student readStudent(int num, Scanner scan) {
        System.out.format("Student %d:\n", num);

        System.out.print("Name: ");
        String name = scan.next();

        System.out.print("1st grade: ");
        double grade1 = scan.nextDouble();

        System.out.print("2nd grade: ");
        double grade2 = scan.nextDouble();

        double avg = (grade1 + grade2) / 2;
        return new Student(name, grade1, grade2, avg);
    }

}