Rocky Car Park Java Console Program: Assignment Sample and Solution

Java is one of the most widely used programming languages in the academic and professional world. Its platform independence, open-source nature, and frequent updates make it a core subject in computer science courses. To evaluate students’ understanding of Java fundamentals, universities often assign console-based programming tasks that test logic building, validation techniques, and output formatting.

Although these assignments appear simple, many students face difficulties due to time constraints, debugging issues, and strict submission deadlines. Managing studies alongside part-time jobs and multiple coursework requirements often leaves little room for trial-and-error coding. As a result, students look for structured examples and expert guidance to understand how such programs should be implemented correctly.

Real Assignment Case: Rocky Car Park Java Program

A computer science student, Anna, was assigned a Java Console Application based on a Rocky Car Park Management System. The task required her to design a class named CarPark, create a UML activity diagram, validate user input, and generate accurate statistical results.

Despite starting early, she encountered multiple runtime and logical errors, particularly while calculating parking fees and formatting decimal values. With less than 15 hours remaining before submission, she needed immediate expert assistance to complete the task successfully.

Our Java experts reviewed the assignment requirements, corrected the logic, implemented proper validation loops, and optimized the program. The final solution was tested thoroughly, helping Anna submit a bug-free assignment and achieve an excellent grade.

Assignment Question Overview

Below is the assignment specification shared with the student, along with the solution artifacts to demonstrate how the problem was solved effectively.

Program Requirements

• Accept non-empty licence plate numbers
• Validate parking hours between 1 and 12
• Calculate and display parking fees
• Determine minimum and maximum stay durations
• Compute average parking time
• Display total parking fees collected
• Format all currency values to two decimal places

Assignment Solution: Rocky’s Car Parking System

Flowchart for Rocky Car Park System



Console Output Screenshots

Program execution with correct inputs:

Entering licence plate and hours for Car 1:

Entering licence plate and hours for Car 2:

Entering licence plate and hours for Car 3:

Checking maximum and minimum parking hours:

Challenges Faced

Decimal formatting caused incorrect output initially. This issue was resolved using formatted output methods to ensure all values displayed exactly two decimal places.

Why Structured Java Solutions Matter

Java console applications require precision in logic, validation, and formatting. Even small mistakes can lead to incorrect outputs or compilation errors. Structured examples like this help students understand how to approach similar assignments confidently.

Professionally written Java programs follow clean coding standards, proper naming conventions, and efficient logic. Each solution is tested against multiple scenarios to ensure reliability.

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