Code For GetCourseByCourseId Method

Code For Getcoursebycourseid Methodimportjavautilscannerpublicclas

Cleaned Assignment Instructions:

Write Java code that prompts the user to enter a course ID from a list of available courses. The code should check whether the entered course ID exists in a predefined array of courses. If the course ID matches an entry, display the course details; if not, display an error message indicating no match. Include a class definition for courses with relevant attributes, initialize an array of course objects, and implement a method to perform the matching logic.

Paper For Above instruction

The task involves creating a Java program that manages and retrieves course information based on user input. The core functionality centers on accepting a course ID from the user and verifying whether it exists in a predefined dataset. If it does, detailed course information is displayed; if not, an appropriate error message is given.

To implement this, we first define a Course class encapsulating attributes such as CourseID, CourseTitle, CreditHours, Description, and PrerequisiteCourseID. This class serves as the blueprint for course objects stored within an array, representing the available courses. The design choice of using an array allows for efficient traversal and lookup operations, suitable for small datasets as in this scenario.

The main program prompts the user with a message listing available course IDs. After capturing user input through the Scanner class, it invokes a method, GetCourseByCourseID, passing the input string. This method iterates over the array of courses, comparing the user input with each course’s CourseID attribute. If a match is found, the system outputs the course details; if not, it returns a result indicating no match.

The implementation of GetCourseByCourseID involves looping through the array of course objects and performing a string comparison for each. When a match occurs, the program prints detailed course information such as title, credit hours, description, and prerequisites. If the loop completes without finding a match, the method informs the user that the course does not match any existing entries.

This approach ensures that the program is both user-friendly and straightforward, handling typical operations such as input validation, object management, and conditional logic. It is well-suited for small-scale educational applications where courses and their properties are pre-defined.

Below is an example implementation of such a program, including the class definitions, array initialization, main method, input handling, and matching function:



import java.util.Scanner;


public class CourseManager {


// Define the Course class


static class Course {


String CourseID;


String CourseTitle;


int CreditHours;


String Description;


String PrerequisiteCourseID;


// Constructor


Course(String courseID, String courseTitle, int creditHours, String description, String prerequisiteCourseID) {


this.CourseID = courseID;


this.CourseTitle = courseTitle;


this.CreditHours = creditHours;


this.Description = description;


this.PrerequisiteCourseID = prerequisiteCourseID;


}


}


// Initialize array of courses


static Course[] courseArray = {


new Course("CIS 400", "OO Analysis & Design", 4, "Important class", "CIS 110"),


new Course("CIS 150A", "VB.NET Programming", 4, "Good Introduction to programming", "CIS 100"),


new Course("CIS 150B", "C# Programming with labs", 4, "Follow-up to CIS 100", "CIS 100")


};


public static void main(String[] args) {


Scanner input = new Scanner(System.in);


System.out.println("Enter Course from available courses: CIS 400, CIS150A, CIS150B");


String userInput = input.nextLine();


int result = GetCourseByCourseID(userInput);


if (result == 0) {


System.out.println("Course does not match");


}


input.close();


}


private static int GetCourseByCourseID(String courseID) {


for (int i = 0; i 

if (courseID.equalsIgnoreCase(courseArray[i].CourseID)) {


System.out.println("Course Matches, here are Course Details");


System.out.println("Course ID: " + courseArray[i].CourseID);


System.out.println("Course Title: " + courseArray[i].CourseTitle);


System.out.println("Credit Hours: " + courseArray[i].CreditHours);


System.out.println("Course Description: " + courseArray[i].Description);


System.out.println("Prerequisite: " + courseArray[i].PrerequisiteCourseID);


return 1; // Indicate success


}


}


return 0; // No match found


}


}

This implementation prompts the user, checks for a matching course, displays details if found, and informs if not. It’s a simple and effective way to handle course data lookup in Java, suitable for small educational applications or initial prototypes.

References

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