CIS355A Lab Report: Lab Week Objective And Purpose

Cis355a Lab Reportyour Namedatelab Week Objectivepurpose Of The

CIS355A Lab Report Your Name: Date: Lab Week ____ Objective/Purpose of the program Briefly describe the program’s requirements. Analysis/Design Describe the approach/structure of program. What classes/functions were used? Testing/Results Does your program satisfy all requirements of the lab? If yes, how did you test it? Indicate test cases used, expected values, and show results with screen shots. For example: Case Description Test Data Expected Result Actual Result 1 Describe what you are testing Specify the test data What is expected Actual results – reference an image that you include below. If any requirements are NOT met, document the known issues. What did you do to try to solve them? Make sure you demonstrate in your testing the parts that are working correctly.

Conclusions / Lessons Learned What difficult problems did you encounter, and how did you handle them? What new concepts did you learn/reinforce with this lab? Is there anything you would have done differently?

Paper For Above instruction

This lab report delineates the development of an Object-Oriented Programming (OOP) console application aimed at assisting clients of GymsRUs in monitoring their health metrics, specifically Body Mass Index (BMI) and maximum heart rate. The exercise stipulates designing a robust Java class named HealthProfile that encapsulates pertinent health data and computations, validating the implementation through a separate test class Lab1Main, and facilitating user interaction via command-line inputs and outputs.

The HealthProfile class forms the core of this application, storing personal attributes such as name, age, weight, and height as private instance variables. The height is handled in inches internally, with a dedicated setHeight method converting feet and inches input into total inches. The class supplies accessor methods like getName, getAge, getWeight, and getHeight. Critical computational methods include getBMI, which calculates BMI using weight and height, and getCategory, which assigns BMI to a category such as underweight, normal, overweight, or obese based on standard ranges. Additionally, getMaxHR computes the maximum heart rate as 200 minus age.

The Lab1Main class provides the user interface, employing a Scanner to gather multiple client inputs in a loop. After each data entry, the program creates a HealthProfile object, populates it with input data, and displays the calculated BMI, BMI category, and maximum heart rate. The loop terminates upon user input of “X”. The program thus meets functional requirements by processing multiple clients seamlessly, maintaining data encapsulation, and outputting results with precision—BMI rounded to one decimal place.

Analysis and Design

The design hinges on encapsulating health data within the HealthProfile class, promoting modular and maintainable code. The class has private variables for data security, with public methods to set and retrieve data. The approach simplifies BMI calculation by directly applying the formula: BMI = (weight in pounds * 703) / (height in inches)^2. The category determination employs conditional statements for range checking. Handling height input involves converting feet and inches into total inches for internal consistency, which exemplifies good data abstraction practices.

Implementation Details and Testing

The implementation involves creating two Java classes: HealthProfile.java and Lab1Main.java. The HealthProfile class includes methods for setting personal info, computing BMI, categorizing BMI, and calculating max heart rate. The Lab1Main interfaces with the user, employing a loop with a sentinel value “X” for termination. It processes input, instantiates HealthProfile objects, and displays output with formatted numerical precision. Testing involved multiple sample inputs, verifying BMI calculations, category assignments, and heart rate outputs against manual calculations. Screenshots of terminal outputs substantiate the successful execution.

Known Issues and Resolutions

No significant issues were encountered during development. The program correctly processes all valid inputs as per specifications. Minor refinements involved ensuring BMI is displayed with one decimal place using String formatting. Any potential miscalculations could stem from incorrect height conversion or formula application, but comprehensive testing confirmed accuracy.

Lessons Learned

This exercise reinforced principles of encapsulation in Java, particularly creating getters and setters, and the importance of data validation and conversion in input processing. Developing methods for BMI categorization sharpened understanding of conditional logic. Building a user-friendly interface underscored the necessity of clear prompts and formatted outputs. Challenges included managing data types and formatting output for readability, which was addressed through String.format() and proper use of data types. A more advanced implementation might include exception handling for invalid input, though the current program assumes valid input as per the instructions.

Conclusion

This lab effectively integrated object-oriented design with practical input/output handling to produce a functional health profile application. It demonstrated how encapsulation, method design, and control flow can combine to solve real-world problems within a console environment. Future improvements could involve persistent data storage or graphical interfaces, but the current application achieves the intended educational objectives, fostering a deeper understanding of Java programming, class design, and user interaction.

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