Java给了我OutofBounds错误，但是我仍然可以打印数组吗？

Question

我正在使用.substring从文本文件中读取字符串的特定部分。这是要读取的字符串的示例：

2093505，“ AMBROS，RALPH HENRY B”，BS Entrep 1，M，23,93.94

我们应该忽略引号，这就是为什么我使用子字符串。但是，当我运行程序时，出现此错误：

java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1
    at edu.slu.prog2.finals2.VidezStudentsRecords.readDataFileIntoList(VidezStudentsRecords.java:54)
    at edu.slu.prog2.finals2.VidezStudentsRecords.run(VidezStudentsRecords.java:29)
    at edu.slu.prog2.finals2.VidezStudentsRecords.main(VidezStudentsRecords.java:21)```

这是错误所在的代码：

            List<Student> students = new ArrayList<>();
            BufferedReader buffy = new BufferedReader(new FileReader (filename));
            while(true){
                String line = buffy.readLine();
                if(line == null){
                    break;
                }
              String[] studentData = line.split(",");
                System.out.println(studentData[0]);
                String id = studentData[0];
                String lastName = studentData[1].substring(1);
                String firstName = studentData[2].substring(1, studentData[2].length() - 1);
                String program = studentData[3].substring(0, studentData[3].length() - 2);
                byte year = Byte.parseByte(studentData[3].charAt(studentData[3].length() - 1) + "");
                char gender = studentData[4].charAt(0);
                int age = Integer.parseInt(studentData[5]);
                double average = Double.parseDouble(studentData[6]);

                //System.out.println(id + " ");
                //System.out.print(lastName + " " + firstName + " " + program + " " + year + " " + gender + " " + age + " " + average);


               Student student = new Student(id, lastName, firstName, program, year, gender, age, average);
               students.add(student);
            }
            buffy.close();
            return students;
        }

我可以打印详细信息。它们按顺序显示并显示所有内容，但对于所有详细信息（ID，名称，年份等），仍然给我OutofBounds错误。我要去哪里错了？

样本输出：

2093505 AMBROS RALPH HENRY B BS Entrep 1 M 23 93.94
2091931 BALIAGA ALEJANDRO A BS Entrep 1 M 18 81.11
2093231 BALTAZAR JEROME S BS Entrep 1 M 22 69.37

Answer 1

您发生错误是因为您仅用“，”分割了字符串，所以每个逗号后面的每个空格都在StudentData中注册为单独的字符串。要解决此问题，您可以使用如下正则表达式：

String[] studentData = line.split(", (\")?");

Answer 2

为什么不使用分割代码（\“，\” | \“，|，\” |，）。