java bmi calculator using methods

:). Example import java.util.Scanner; public class Example { public static void main(String args[]) { Scanner sc = new Scanner(System.in); System.out.print("Input weight in kilogram: "); double weight = sc.nextDouble(); System.out.print(" Here's what the code does, step by step: The program starts by importing two classes from the Java library: java.util.Scanner and java.util.Date. After all, maybe you'll end up asking for a feet/foot height as "5'1''" instead of inches. The ln in println stands for linebreak. Finally, it prints the result on the console. The best answers are voted up and rise to the top, Not the answer you're looking for? If Else Conditional Statement in Java - CreatifWerks If its <= 0 then we set the w back to 0 so the loop tries again. Please see, @dustytrash All advice taken into account I've spent many hours researching your comments and have made a lot of changes -I'll change the name -I think I've instantiated to call methods -I don't know any other way but {while(true)} Can't figure out how to put inside loop. I created a design to help practice object-oriented composition. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Hope this will help you. Algebraically why must a single square root be done on all terms rather than individually? I have an assignment in Java, where I have to calculate the BMI of a particular user, in an array of users, an array of heights and an array of weights. * Print the final result Making statements based on opinion; back them up with references or personal experience. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. The Body Mass Index (BMI) is a quick way to assess your body size simply with your weight and height, regardless of your gender. methods - How to Calculate BMI in Java - Stack Overflow The Journey of an Electromagnetic Wave Exiting a Router. You might want to create a new method which does the actual BMI calculation, and refer to it from the calculateBMI method: And separate the actual calculation from describing the BMI. They don't add anything useful to the code itself. Explicit numbers used should be wrapped in a constant to better explain its purpose. It says, You may assert that all given arrays are equal of length, since the assignment does not mention array lengths. The code snippet that demonstrates this is given as follows , Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. rev2023.7.27.43548. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Naming it continueLoop because it's used in a while statement is silly. It print the BMI when passed to the method name match with the name in "names" array, But it is risky because if the length of names array is bigger than weight or height it will throw ArrayIndexOutOfBoundsException but I assume that arrays have always properly length. Also during construction, you can calculate the BMI for the object and use it to populate a results string on each object. We have to use a different formula for both cases. An IDE will help you with this but I understand some college/university courses start off disallowing an IDE and I will assume that's the case here. I'm not a java programmer so this might not be right. The problem I'm having is I have absolutely no clue how to put the input from weight and height methods into the BMI method. Connect and share knowledge within a single location that is structured and easy to search. How To Get the First Digit of a Number in JavaScript. Asking for help, clarification, or responding to other answers. This is expressed as kg/m^2. The following table shows the main BMI categories,BMI RangeCategory< 18.5Thinness18.5 25Normal25 30Overweight> 30Obese. Code Review Stack Exchange is a question and answer site for peer programmer code reviews. Not the answer you're looking for? JUnit : Calculator Test Case Example - TestingDocs.com It only takes a minute to sign up. Note the println instead of print. You shouldn't shorten variables names. MathJax reference. This program is written in Java and it calculates the body mass index (BMI) of a person based on their height and weight. The values of the weight and height are obtained from the user in kilogram and meters respectively. ), Having the main method within your logic class is never good. BMI calculator finds whether the person is underweight, normal, overweight, or obese. BMI or body mass index can be calculated by taking the weight in pounds and height in inches or by taking the weight in kilograms and height in meters. Can you give an example? BMI Calculator in Java - Medium I'm hoping to get a critical review of the code to identify any potential problems with it. computing the BMI given the height and the weight of the user, converting a numeric value of the BMI to a human-readable message. Will I enter my revised code above or should I create a new post as it's very different? Can Henzie blitz cards exiled with Atsushi? If all you want to do in your application is calculate the BMI, PersonHealthData is completely unnecessary, just do the calculation in EntryPanel and be done with it. We make use of First and third party cookies to improve our user experience. for example, if the input values entered by the user are height: 65 and weight: 150 the output would be overweight. How can I change elements in a matrix to a combination of other elements? Create the Formula to calculate the BMI . GitHub - iasjem/bmi-calculator-java: A simple program that calculates It's not a big deal here but something to keep in mind for future programs. Asking for help, clarification, or responding to other answers. Note that the denominator is squared. It's not descriptive. continueLoop is a bad name. Am I betraying my professors if I leave a research group because of change of interest? The user must type in his * or her . The Scanner is a dependency in each of the 3 methods and may be difficult to unit test around. A similar question must have been asked a thousand times, but for the life of me I can't figure this out. A body of mass 25 kg has a momentum of 125 kg.m/s. That way your methods can change their logic without impacting the other one. Write a java code to let the user enter weight, feet, and inches and interpret the users BMI. Connect and share knowledge within a single location that is structured and easy to search. */ public static void main (String [] args) { double cm,kg,bmi,newcm; It uses separate methods for height, weight and BMI, these methods are called from main. [6] The equation is weight/height 2. I'd suggest you to write a class, let's call it Person. Java Program to Calculate BMI (Body Mass Index) - STechies This tutorial demonstrates how to create a BMI calculator in Java. @media(min-width:0px){#div-gpt-ad-codevscolor_com-medrectangle-3-0-asloaded{max-width:320px;width:320px!important;max-height:50px;height:50px!important}}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'codevscolor_com-medrectangle-3','ezslot_8',152,'0','0'])};__ez_fad_position('div-gpt-ad-codevscolor_com-medrectangle-3-0');@media(min-width:0px){#div-gpt-ad-codevscolor_com-medrectangle-3-0_1-asloaded{max-width:320px;width:320px!important;max-height:50px;height:50px!important}}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'codevscolor_com-medrectangle-3','ezslot_9',152,'0','1'])};__ez_fad_position('div-gpt-ad-codevscolor_com-medrectangle-3-0_1');.medrectangle-3-multi-152{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding:0;text-align:center!important}, @media(min-width:0px){#div-gpt-ad-codevscolor_com-medrectangle-3-0-asloaded{max-width:728px!important;max-height:90px!important}}. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. OverflowAI: Where Community & AI Come Together, How can I calculate BMI in Java Where the weight and height is an array, Behind the scenes with the folks building OverflowAI (Ep. bmi-calculator GitHub Topics GitHub I'm getting a course on Java so I'm simply a beginner, but this is very useful. This method is also doing waaaaay too much. You would get an answer of 0.03673. on the how, which is already apparent in the code. What is telling us about Paul in Acts 9:1? Do the 2.5th and 97.5th percentile of the theoretical sampling distribution of a statistic always contain the true population parameter? How do I get rid of password restrictions in passwd. One method should do one focused thing. Client-Side Programming The steps involved on client side are as follows- Open the socket connection 1. In your example if the user inputs a String rather than an integer that will throw an error causing the program to terminate. Can you move the creation and closure of scan outside the function and pass it as a parameters? Learn more about Stack Overflow the company, and our products. All code should eventually be 'working'. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, First of all userBMI = weight[i]/height[j] * height[j]; is not a correct way to calculate BMI. Learn more about Stack Overflow the company, and our products. My code: Below code converts feet and inches to meters. Making statements based on opinion; back them up with references or personal experience. (adsbygoogle = window.adsbygoogle || []).push({}); In thisprogramwe will calculate BMI. Also, maybe you've had some problem with indenting your code when posting it here? The code snippet that demonstrates this is given as follows , Then the Body Mass Index is calculated using the formula BMI = weight / (height * height). That is, it's a good idea to create a doc comment for each method saying what it does, how it behaves if it gets an incorrect input and so on. I hope this feedback helps and I will leave my live code review below. AFAIK, the original BMI calculations use the metric system (height in cm, weight in kilograms). Example: Enter the numbers: 2 2 Enter the operator (+,-,*,/) + The final result: 2.0 + 2.0 = 4.0 Approach Take two numbers using the Scanner class. "Who you don't know their name" vs "Whose name you don't know". What do multiple contact ratings on a relay represent? How do I keep a party together when they have conflicting goals? After I stop NetworkManager and restart it, I still don't connect to wi-fi? This tutorial helps beginners to understand writing and executing JUnit Tests. The trick in the second half of the while loop is that the expression, Thanks. Introduction In this post, we will look at a Simple Calculator Test case example for writing JUnit Tests. OverflowAI: Where Community & AI Come Together, Behind the scenes with the folks building OverflowAI (Ep. Now, what does this look like : Notice I've changed h and w for height and weight. The code works and meets all requirements as far as I can see. BMI Calculator Java Swing Practice - Code Review Stack Exchange They shouldn't describe how it works. This gives you the option to create many instances of BMI calculation objects or be able to attach the object to something like a person object. Thanks again! Sci fi story where a woman demonstrating a knife with a safety feature cuts herself when the safety is turned off, The British equivalent of "X objects in a trenchcoat". Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. Instead of one main class calling two methods within your single calculator class, my design creates three new classes. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. BMI Calculator Program in Java - Programming Code Examples Code Review Stack Exchange is a question and answer site for peer programmer code reviews. The output would be a string of text on the console as the result of the calculation. My POC is clarity/fluidity of my code and my variable data types. In this article we will learn how to create user defined exceptions (own exceptions) and how to use them in Java programs. Using the range of BMI, individuals are classified as underweight, normal or overweight. Can a lightweight cyclist climb better than the heavier one by producing less power? ComputeBMI doesn't sound like a good class name to me. It can be calculated by taking the weight in kilograms and dividing it by the square of your height in meters. Connect and share knowledge within a single location that is structured and easy to search. Double area float r float h return. BMI = (Weight in Kilograms) / (Height in Meters * Height in Meters). I agree, however, it was the prompt in the sample output so I just went with it. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The code works and meets all requirements as far as I can see. @IEatBagels Post edited to include full context of what the program does. How can I change elements in a matrix to a combination of other elements? I'm still confused about static/non-static methods but my revised code works (apart from the int = double*2.2 problem which I am working on now). MathJax reference. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. It's not a good practice. Calorie Counter -- We automatically calculate the calories in your foods, meals and recipes. The Body Mass Index BMI is a measurement of health based on height and weight. I'm assuming BMI means Body Mass Index, but I could be wrong. I guess you need a conversion factor for the imperial one. You can assign the output of a method to a parameter like so: When calling a method, you can pass in parameters: Thanks for contributing an answer to Stack Overflow! How common is it for US universities to ask a postdoc to bring their own laptop computer etc.? You need to set them to the parameters of your class: this.firstName = user FirstName. Then two more specific subclasses that inherit from that base class called ImperialBMICalculation and MetricBMICalculation. The BMI stands for Body Mass Index. Next hint: you tagged your post with "parameters", but none of your functions uses any. No, you don't need the last else if. You need fields for the class to save the inputed variables, I created a constructor to initialize the variables. Although Java provides several pre-defined exception classes, sometimes we might need to create Based on the requirements sometimes you might want to suspend, resume or stop a thread. This line should declare the weight variable: double weight = input.nextDouble();. How can I calculate BMI in Java Where the weight and height is an array (Further info: program to calculate Body Mass Index (BMI) allowing user to enter weight in stones and pounds or kilograms It allows user to enter height in feet and inches or centimeters. Very basic calculator using methods Ask Question Asked 9 years, 3 months ago Modified 7 years, 2 months ago Viewed 97k times 15 I have made a basic calculator using methods. The message Enter feet: looks kind of strange. The comments are going to be removed in the final submission. Connect and share knowledge within a single location that is structured and easy to search. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How to make a BMI Calculator using Java - Codentricks Why would a highly advanced society still engage in extensive agriculture? @media(min-width:0px){#div-gpt-ad-codevscolor_com-medrectangle-4-0-asloaded{max-width:250px;width:250px!important;max-height:250px;height:250px!important}}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'codevscolor_com-medrectangle-4','ezslot_6',153,'0','0'])};__ez_fad_position('div-gpt-ad-codevscolor_com-medrectangle-4-0');@media(min-width:0px){#div-gpt-ad-codevscolor_com-medrectangle-4-0-asloaded{max-width:336px!important;max-height:280px!important}}We will also print if the result falls under underweight, normal, overweight or obese. Thanks for mentioning Indentation, I thought it was correct(ish) but is it indented too much? Table of Contents Toggle Section 1: Introduction Section 2: Understanding Dynamic Posting of Methods Quick Response Code (QR Code) is a two-dimensional matrix like barcode, designed by a subsidiary of Toyota to mark their vehicles for tracking in their manufacturing facilities. You could also add some kind of input validation and error handling so that your program doesn't fail with an exception (it might be confusing for the user) but rather prints a more suitable message and possible prompts the user again. (Further info: program to calculate Body Mass Index (BMI) allowing user to enter weight in stones and pounds or kilograms For example, printing out the welcome message could be a method. Is it normal for relative humidity to increase when the attic fan turns on? Finally the values of the Body Mass Index is displayed. OverflowAI: Where Community & AI Come Together, programmers.stackexchange.com/questions/189222/, Behind the scenes with the folks building OverflowAI (Ep. Why is the expansion ratio of the nozzle of the 2nd stage larger than the expansion ratio of the nozzle of the 1st stage of a rocket? rev2023.7.27.43548. Copyright Tutorials Point (India) Private Limited. After I stop NetworkManager and restart it, I still don't connect to wi-fi? :(, @ferada Ehm, are you sure? Perhaps multi-line comments would be more useful to give a general explanation to what certain sections of your code do? Remember, it's very easy to assume that users will never input silly things like words where numbers are meant to go but trust methey will. It is a measure of health based on height and weight. Note that the program takes the height input in centimeters. I'd rather call it a BMICalculator (it's conventional to name classes with nouns and methods with verbs). BMI is a fairly reliable indicator of body fatness for most people. BMI Calculator Java - Stack Overflow The formula to take the BMI is: BMI = (Weight in Kilograms) / (Height in Meters * Height in Meters) The BMI has ranges which can be seen in the table below: Let's implement the BMI index calculator in Java: I think it should say that it requests the user's height (it's not clear from the message itself). :), Simply put, comments should explain the why, not how. Find centralized, trusted content and collaborate around the technologies you use most. What Is Behind The Puzzling Timing of the U.S. House Vacancy Election In Utah? It can be calculated by taking the weight in kilograms and dividing it by the square of your height in meters. I thought about this. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. For example, 0.03673 multiplied by 703 equals 25.82, so your approximate BMI in this example would be 25.8. Although you may not have learnt how to make other methods yet, it is a simple concept to learn and is easily found on numerous YouTube tutorials. BMI above 30 is considered obese. Are self-signed SSL certificates still allowed in 2023 for an intranet server running IIS? BMICalculation will have methods that will be overridden by the subclasses such as displaying the result of a particular calculation. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Your BMI calculation is also off since your automatically using values of 0.0 and 0.0. PersonHealthData is model, service and partly view provider in one. Using a comma instead of and when you have a subject with two verbs, What does Harry Dean Stanton mean by "Old pond; Frog jumps in; Splash!". This import can be removed completely, since all classes from java.lang are imported implicitly. The higher your Body Mass Index the more overweight you are. Thank you all. is there a limit of speed cops can go on a high speed pursuit? I for example would would have a getInput methods to get the values for the user, a convertMeasurements method for converting the users input and finally a displayResult method. Inside the main method, the program creates a new, Next, the program calculates the users body mass index (BMI) using the formula: BMI = weight / height^2 * 703. For example,weight = 75 kg, height = 1.5 mBMI = 75 / (1.5*1.5) = 33.33@media(min-width:0px){#div-gpt-ad-knowprogram_com-medrectangle-3-0-asloaded{max-width:728px;width:728px!important;max-height:90px;height:90px!important}}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'knowprogram_com-medrectangle-3','ezslot_5',121,'0','0'])};__ez_fad_position('div-gpt-ad-knowprogram_com-medrectangle-3-0'); Using the range of BMI, individuals are classified as underweight, normal or overweight. Relative pronoun -- Which word is the antecedent? You might want to re-check the length of. BMI stands for body mass index. rev2023.7.27.43548. Valid hypothesis? Making statements based on opinion; back them up with references or personal experience. In first if you check if bmi is smaller 18.5. In regards to commenting, yes some comments are somewhat pointless if what you're doing is pretty self explanatory. Making statements based on opinion; back them up with references or personal experience. I didn't know whether it'd bloat my simple project or not. 594), Stack Overflow at WeAreDevelopers World Congress in Berlin, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Preview of Search and Question-Asking Powered by GenAI, Computing BMI and How to Prevent Rounding Up Floating Points (Java), BMI calcuator, several methods, code check.