我正在尝试在Java中读取一组字符串值，但我只能读取到第n-1个值，例如，如果字符串数组大小为4，我只能提供3个输入。
以下是我的代码。
package my_project;
import java.util.Scanner;
public class ArrayString 
{
    public static void main(String[] args)
    {
        int n;
        String key;
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the no of courses:");
        n = sc.nextInt();
        if (n <= 0)
        {
            System.out.println("Invalid range");
            System.exit(0);
        }
        System.out.println("The available courses are:");
        String[] courses = new String[n];
        for (int i = 0; i < n; i++)
        {
            courses[i] = sc.nextLine();
        }
        for (int i = 0; i < n; i++)
        {
            if (courses[i].equals("java"))
            {
                System.out.println("course is available ");
                System.exit(0);
            }
        }
    }
}

public static void main(String... args) {
    try (Scanner sc = new Scanner(System.in)) {
        System.out.print("输入课程数量：");
        int n = sc.nextInt();
        sc.nextLine();  // 在读取整数后加入此行以读取后续的字符串
        if (n <= 0)
            System.out.println("无效的范围");
        else {
            System.out.println("可用课程有：");
            String[] courses = new String[n];
            for (int i = 0; i < n; i++) {
                System.out.format("#%d: ", i + 1);
                courses[i] = sc.nextLine();
            }
            for (int i = 0; i < n; i++) {
                if ("java".equalsIgnoreCase(courses[i])) {
                    System.out.println("课程可用");
                    return;
                }
            }
        }
    }
}