java中数组越界异常的获取

Question

嘿，伙计们，我不知道如何修复下面的代码，因为我每次运行时都会出现区域越界异常。如果能帮助修复这个thx，我将不胜感激

int numberStudents = numberOfStudents();  
    System.out.println("");
    int[] gradeOfStudent = gradeOfStudents(numberStudents);

方法如下

public static int[] gradeOfStudents(int numberStudents) {
    Scanner input = new Scanner (System.in);
    int[] grades = new int [numberStudents];
    String[] name = new String[numberStudents];
    for(int i = 0; i < numberStudents;) {
        for(int j = 0; j < numberStudents; i++ ) {
            System.out.print("Enter the name of the " + (i + 1) + " student: ");
        name[i] = input.next();
            System.out.print("Enter the " + (i + 1) + " student's grade: " );
        grades[i] = input.nextInt();              
        }
    } 
    return grades;
}

Answer 1

在学生成绩（int）方法中有第二个循环：

for(int j = 0; j < numberStudents; i++ ) {

正如您所见，循环变量是'j'，但它会在每个循环后更新'i'，因此i<；numberStudents签入第一个循环不再为每个“i”调用->；这可能是不允许的

你似乎也没有用“j”来表示任何东西，整个循环可能是多余的

Answer 2

移除j for循环，并将i++（增量i）添加到第一个for循环中

public static int[] gradeOfStudents(int numberStudents) {
Scanner input = new Scanner (System.in);
int[] grades = new int [numberStudents];
String[] name = new String[numberStudents];
for(int i = 0; i < numberStudents; i++) {
    System.out.println("Enter the name of the " + (i + 1) + " student: ");
    name[i] = input.next();
    System.out.println("Enter the " + (i + 1) + " student's grade: " );
    grades[i] = input.nextInt();              
} 
return grades;

}