public static ScoreMenu queryFromFile(Class classes, Course courses) {
MainWindow.initDataFile(SCORE_MENU_FILE);
DataInputStream input;
Class tempClass = new Class();
Student student;
Course course = new Course();
int[] testTime = new int[5];
int numberOfAttendTestStudent;
long idOfStudents[];
float scoreOfTest[];
try {
input = new DataInputStream(new FileInputStream(SCORE_MENU_FILE));
while (input.available() > 0) {
tempClass.setGrade(input.readInt());
tempClass.setMajor(input.readUTF());
tempClass.setClassNumber(input.readInt());
int studentNumber = input.readInt();
tempClass.setStudentNumber(0);
for (int i = 0; i < studentNumber; i++) {
student = new Student();
student.setId(input.readLong());
student.setName(input.readUTF());
tempClass.addStudent(student);
}
course.setId(input.readUTF());
course.setName(input.readUTF());
course.setCredit(input.readFloat());
course.setPeriod(input.readInt());
for (int i = 0; i < 5; i++) testTime[i] = input.readInt();
numberOfAttendTestStudent = input.readInt();
idOfStudents = new long[numberOfAttendTestStudent];
scoreOfTest = new float[numberOfAttendTestStudent];
for (int i = 0; i < numberOfAttendTestStudent; i++) idOfStudents[i] = input.readLong();
for (int i = 0; i < numberOfAttendTestStudent; i++) scoreOfTest[i] = input.readFloat();
if ((classes.equals(tempClass)) && (courses.equals(course))) {
input.close();
return new ScoreMenu(
tempClass, course, testTime, numberOfAttendTestStudent, idOfStudents, scoreOfTest);
}
}
input.close();
return null;
} catch (Exception e) {
return null;
}
}
