Simple Calculator using TCP in Java - GeeksforGeeks This can be shortened to: int userInput = input.nextInt(); bmiCalcImperial is a really bad name for a method. The Scanner is a dependency in each of the 3 methods and may be difficult to unit test around. Good point, thank you. In Java, it is good practice to declare variables as late as possible, that is when they are first used. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. 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. 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. on the how, which is already apparent in the code. Thank you for the many tips! I changed the method call to nextDouble so that it matches the type of the height variable. You should never use while(true), instead put the condition inside the while loop. */, /** It can be calculated by taking the weight in kilograms and dividing it by the square of your height in meters. I agree, however, it was the prompt in the sample output so I just went with it. How do I get rid of password restrictions in passwd. BMI Calculator Java Swing Practice - Code Review Stack Exchange See Lszl Stahorszki's answer. Calculator Program In Java Using Method Overloading - KUTRHE Live code review: https://youtu.be/RMJWdH2dQXU. 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. * @param bmi : calculated BMI result It uses separate methods for height, weight and BMI, these methods are called from main. 0.45359237 is an example of this. This is what the code looks like: I advise you to do a little bit more learning in java, specifically variables, declaring, initializing, etc.. Also learn class, constructors, etc.. 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. I'm writing a program that takes the users input for height and weight then calculates the Body Mass Index from this. BMI = (Weight in Kilograms) / (Height in Meters * Height in Meters). */ public static void main (String [] args) { double cm,kg,bmi,newcm; It can be calculated by taking your weight in kilograms and dividing it by the square of your height in meters. Why would a highly advanced society still engage in extensive agriculture? This becomes easy when you name your methods descriptively. Complete Java course: https://codingwithjohn.thinkific.com/courses/java-for-beginnersSource code is available here: https://bit.ly/3edKaxvBuilding a BMI calc. Try to fix it if that's not how you see code in your IDE. Java program to calculate Body Mass Index (BMI) - Online Tutorials Library Also, maybe you've had some problem with indenting your code when posting it here? 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. Don't use static for all variables. It's best to handle those eventualities. Is it ok to run dryer duct under an electrical panel? 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. Introduction In this post, we will look at a Simple Calculator Test case example for writing JUnit Tests. Image Preview The program starts by importing two classes from the Java library: The program defines a main method, which is the entry point for a Java program. Language: Java Sort: Fewest forks erenulas / BMICalculator Star 0 Code Issues Pull requests An Android application for calculating body mass index android-application bmi-calculator body-mass Updated on Jan 25, 2020 Java tarunthota3 / BMI-Calculator-App Star 0 Code Issues In each instance of this class, you can store the name, the height and weight of a given person. There's no need for the class at @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}}. What mathematical topics are important for succeeding in an undergrad PDE course? Connect and share knowledge within a single location that is structured and easy to search. They shouldn't describe how it works. Is it normal for relative humidity to increase when the attic fan turns on? Altogether, a very nice piece of work. In the constructor for the two subclasses, you will put the user prompt to get the height and weight information for the calculation of each type. They don't add anything useful to the code itself. Java Program to Calculate BMI (Body Mass Index) Even so, try to make the code 'obvious' first. Connect and share knowledge within a single location that is structured and easy to search. The ln in println stands for linebreak. 3. Thank you all. The assignment is not quite accurate. Below I have shared the simplecalculator program in java using swing. for example, if the input values entered by the user are height: 65 and weight: 150 the output would be overweight. So ideally you need so sort of validation or error handling in your programperhaps a validation method that requests new input if an error is thrown? In my mind, feet and inches should be integers and weight should be a double. Write a java code to let the user enter weight, feet, and inches and interpret the users BMI. Why do we allow discontinuous conduction mode (DCM)? ), Having the main method within your logic class is never good. I want to throw exceptions for the wrong input (has to be a double, non-negative and not zero) and I want to catch any mathematical errors that may occur. I guess you need a conversion factor for the imperial one. The Body Mass Index (BMI) is a quick way to assess your body size simply with your weight and height, regardless of your gender. We have to use a different formula for both cases. Learn more about Stack Overflow the company, and our products. This program will use both Metric (kg/m) and Imperial (lb/in) BMI formula. Most of your comments now are just descriptive, i.e. So in the upcoming else case you don't have to check if its equal or bigger 18.5, if this would not be true it would be smaler so the if case had taken action and the else won't. Code Review Stack Exchange is a question and answer site for peer programmer code reviews. -I now have 9 methods instead of 3. bmiCalcImperial now split into 3 methods -What would be a better name than {continueLoop}? BMI stands for Body Mass Index. Why is {ni} used instead of {wo} in ~{ni}[]{ataru}? 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. Therefore, comment sparingly, and only when you really need it to explain something that is non-obvious. It's not a big deal here but something to keep in mind for future programs. You would get an answer of 0.03673. Notify me of follow-up comments by email. PersonHealthData is model, service and partly view provider in one. BMI is a fairly reliable indicator of body fatness for most people. After I stop NetworkManager and restart it, I still don't connect to wi-fi? Asking for help, clarification, or responding to other answers. It makes your code look sloppy, as if you didn't proofread it yourself before showing it to other people. BMI between 25 and 29.9 is considered overweight. - Rafa Sokalski Nov 7, 2018 at 7:54 Finally the values of the Body Mass Index is displayed. BMI between 18.5 and 24.9 is considered ideal. My calculator is built with 5 methods. Formula of BMI in Lbs. Use MathJax to format equations. After I stop NetworkManager and restart it, I still don't connect to wi-fi? Beginning BMI calculator in Java. 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. 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. BMI stands for body mass index. I'm not a java programmer so this might not be right. 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. You could declare and initialize the arrays at once, i.e. I'm getting a course on Java so I'm simply a beginner, but this is very useful. In this class, it's really simple, to write a method which returns the BMI. I hope this feedback helps and I will leave my live code review below. It only takes a minute to sign up. Actually, I don't understand what exactly you're saying yet, unfortunately. As a beginner, you may need these kinds of comments, but as soon as you have written this type of code five times, you should get rid of these comments. Good point with the exceptions, now you could also refactor the duplicate loop into a separate method like the other answers do, so we get the best of both. 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! This is my first program so no doubt I've made mistakes. What do multiple contact ratings on a relay represent? :), Simply put, comments should explain the why, not how. In your example if the user inputs a String rather than an integer that will throw an error causing the program to terminate. The BMI has ranges which can be seen in the table below: Lets implement the BMI index calculator in Java: The code above will take inputs for the weight and height and then check the category of BMI. BMI is calculated by dividing a person's weight in kilograms by square of height in meters. BMI Calculator (Java version) Calculates BMI of user to know his/her current body weight. I'll go through your code from top to bottom: The comment "import scanner" is not necessary, since it only repeats what the code below already does.