How to use Java to write a simple student course selection time conflict resolution system?

How to use Java to write a simple student course selection time conflict resolution system?

With the increase in university courses and the improvement of students' freedom in choosing courses, time conflicts among students in choosing courses have become a common problem. In order to solve this problem, we can use Java to write a simple student course selection time conflict resolution system. The following will introduce how to implement this system using Java.

First, we need to define some key classes and objects. First, we define a Course class to represent a course, which includes course number, course name, class teacher, class time and other related information. Next, we define a Student class to represent a student, which includes student number, student name, course selection list and other related information.

Next, we need to implement some key methods. First, we implement an addCourse method to add courses to the course selection list when students select courses. When a student adds a course, we need to check whether the course conflicts with the time of the selected course. If there is a time conflict, course selection will be refused. If there is no time conflict, the course will be added to the course selection list. The implementation of this method is as follows:

public void addCourse(Course course) {
    // 检查选课时间冲突
    boolean conflict = false;
    for (Course selectedCourse : selectedCourses) {
        if (selectedCourse.getTime().equals(course.getTime())) {
            conflict = true;
            break;
        }
    }

    // 如果时间冲突，则拒绝选课
    if (conflict) {
        System.out.println("选课时间冲突！");
    } else {
        // 如果时间不冲突，则添加课程到选课列表中
        selectedCourses.add(course);
        System.out.println("选课成功！");
    }
}

In addition to the method of adding courses to the course selection list, we also need to implement a removeCourse method to remove courses from the course selection list when students withdraw from the course. The implementation of this method is as follows:

public void removeCourse(Course course) {
    selectedCourses.remove(course);
    System.out.println("退课成功！");
}

Finally, we can write a test class to test our course selection time conflict resolution system. In the test class, we can create some student objects and course objects, and perform course selection and withdrawal operations. The following is an example of a simple test class:

public class CourseRegistrationSystem {
    public static void main(String[] args) {
        // 创建学生对象和课程对象
        Student student1 = new Student(1, "张三");
        Student student2 = new Student(2, "李四");
        Course course1 = new Course(1, "Java编程", "John", "星期一 9:00-11:00");
        Course course2 = new Course(2, "数据库管理", "Emily", "星期二 14:00-16:00");
        Course course3 = new Course(3, "Web开发", "David", "星期三 10:00-12:00");

        // 学生1选课和退课测试
        student1.addCourse(course1);
        student1.addCourse(course2);
        student1.addCourse(course3);
        student1.removeCourse(course2);

        // 学生2选课和退课测试
        student2.addCourse(course1);
        student2.addCourse(course3);
        student2.removeCourse(course1);
    }
}

Through the above code example, we can use Java to write a simple student course selection time conflict resolution system. This system can check whether there are time conflicts when students choose courses, and provide the function of selecting and withdrawing courses. Of course, this is just a simple example, and you can expand and optimize the system according to actual needs. I hope this article will help you understand how to use Java to write a student course selection time conflict resolution system.

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