完成一个控制台应用（也可用SWING应用或Web应用）程序的开发，该程序应该能够提供如下功能： 1. 用户通过菜单可以选择不同操作功能。 2. 用户可以查询所有课程信息。 3. 用户可以新增课程信息。 4. 用户可以修改现有的课程信息。 5. 用户可以删除指定课程的信息。 6. 用户可以查询指定某门课程的选课情况。

好的，这是一个比较明确的问题。我可以为您提供一个简单的Java程序实现上述功能。请注意，以下程序只是一个示例，您可能需要根据您的具体需求进行修改和扩展。

import java.util.ArrayList;
import java.util.Scanner;

public class CourseManagementSystem {
    private ArrayList<Course> courses;

    public CourseManagementSystem() {
        courses = new ArrayList<Course>();
    }

    public void run() {
        Scanner scanner = new Scanner(System.in);
        int choice = 0;
        while (choice != 6) {
            System.out.println("请选择操作：");
            System.out.println("1. 查询所有课程信息");
            System.out.println("2. 新增课程信息");
            System.out.println("3. 修改现有课程信息");
            System.out.println("4. 删除指定课程信息");
            System.out.println("5. 查询指定某门课程的选课情况");
            System.out.println("6. 退出");

            choice = scanner.nextInt();
            scanner.nextLine();

            switch (choice) {
                case 1:
                    displayAllCourses();
                    break;
                case 2:
                    addCourse();
                    break;
                case 3:
                    modifyCourse();
                    break;
                case 4:
                    deleteCourse();
                    break;
                case 5:
                    displayCourseSelection();
                    break;
                case 6:
                    System.out.println("程序已退出");
                    break;
                default:
                    System.out.println("无效的选择，请重新输入");
                    break;
            }
        }
    }

    private void displayAllCourses() {
        if (courses.isEmpty()) {
            System.out.println("无课程信息");
        } else {
            System.out.println("所有课程信息：");
            for (Course course : courses) {
                System.out.println(course);
            }
        }
    }

    private void addCourse() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入课程名称：");
        String name = scanner.nextLine();
        System.out.println("请输入授课教师：");
        String teacher = scanner.nextLine();
        System.out.println("请输入选课人数：");
        int enrollment = scanner.nextInt();
        scanner.nextLine();
        Course course = new Course(name, teacher, enrollment);
        courses.add(course);
        System.out.println("课程信息已添加");
    }

    private void modifyCourse() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要修改的课程名称：");
        String name = scanner.nextLine();
        Course course = findCourseByName(name);
        if (course == null) {
            System.out.println("未找到该课程");
        } else {
            System.out.println("请输入新的课程名称（留空表示不修改）：");
            String newName = scanner.nextLine();
            if (!newName.isEmpty()) {
                course.setName(newName);
            }
            System.out.println("请输入新的授课教师（留空表示不修改）：");
            String newTeacher = scanner.nextLine();
            if (!newTeacher.isEmpty()) {
                course.setTeacher(newTeacher);
            }
            System.out.println("请输入新的选课人数（留空表示不修改）：");
            String newEnrollmentStr = scanner.nextLine();
            if (!newEnrollmentStr.isEmpty()) {
                int newEnrollment = Integer.parseInt(newEnrollmentStr);
                course.setEnrollment(newEnrollment);
            }
            System.out.println("课程信息已修改");
        }
    }

    private void deleteCourse() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要删除的课程名称：");
        String name = scanner.nextLine();
        Course course = findCourseByName(name);
        if (course == null) {
            System.out.println("未找到该课程");
        } else {
            courses.remove(course);
            System.out.println("课程信息已删除");
        }
    }

    private void displayCourseSelection() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要查询选课情况的课程名称：");
        String name = scanner.nextLine();
        Course course = findCourseByName(name);
        if (course == null) {
            System.out.println("未找到该课程");
        } else {
            System.out.println(course.getName() + " 的选课情况：");
            ArrayList<String> students = course.getStudents();
            if (students.isEmpty()) {
                System.out.println("无人选修");
            } else {
                for (String student : students) {
                    System.out.println(student);
                }
            }
        }
    }

    private Course findCourseByName(String name) {
        for (Course course : courses) {
            if (course.getName().equals(name)) {
                return course;
            }
        }
        return null;
    }

    public static void main(String[] args) {
        CourseManagementSystem system = new CourseManagementSystem();
        system.run();
    }
}

class Course {
    private String name;
    private String teacher;
    private int enrollment;
    private ArrayList<String> students;

    public Course(String name, String teacher, int enrollment) {
        this.name = name;
        this.teacher = teacher;
        this.enrollment = enrollment;
        students = new ArrayList<String>();
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTeacher() {
        return teacher;
    }

    public void setTeacher(String teacher) {
        this.teacher = teacher;
    }

    public int getEnrollment() {
        return enrollment;
    }

    public void setEnrollment(int enrollment) {
        this.enrollment = enrollment;
    }

    public ArrayList<String> getStudents() {
        return students;
    }

    public void addStudent(String student) {
        students.add(student);
    }

    public void removeStudent(String student) {
        students.remove(student);
    }

    @Override
    public String toString() {
        return name + "（授课教师：" + teacher + "，选课人数：" + enrollment + "）";
    }
}

这个程序使用了控制台界面，通过菜单提供了所有的操作功能。用户可以选择不同的操作，然后程序会执行相应的操作。程序使用了一个Course类来存储课程信息，包括课程名称、授课教师、选课人数和已选学生名单。程序使用ArrayList来存储所有的课程信息。