The calculator has a simple GUI and performs simple arithmetic operations. 8. Formula of BMI . Those there is more than one way to make GUI with Java but the class will stay with Swing this term. Embed Embed this gist in your website. This is a step by step video tutorial to develop a calculator in java by using NetBeans. In this post, we’ll learn how to handle the button event, for example, display something, or … Skip to end of metadata. Hot Network Questions readlink -f and -e option description not clear What is the Levi-Civita connection trying to describe? 0. We will be writing the code below the where we declared the label1. Interest calculator program in java; Calculator program using Applet; Calculator Program in Java using Swing; Steps to create the program: Create a text file with name CalculatorDemo.java and put the code below. As you can see the text field is too small, we can fix it by setting the width by the code below: In the next post, we will learn about the Action handler to work with button and append the text field. The screen shot of the calculator is placed below. displayValue holds a string value that represents the input of the user or the result of an operation. Comment actions Permalink. Let’s write something in the constructor function of GUICalculator. Here we have a Java GUI Calculator Source Code for you in which a Java GUI calculator has been created using “swing” and “awt”. The following example program in Java calculates BMI value based on inputs in metric units. If you don't prefer a specific program, it's easiest to use IDLE, an IDE that is usually installed together with Python. * WARNING: Do NOT modify this code. The simplest and easiest way in order to come up with a Graphical User Interface in any programming language is via the means of a calculator. Yet Another Java GUI Calculator. December 8, 2014 . You will also need Java 7 for the Nimbus look and feel. All gists Back to GitHub Sign in Sign up Sign in Sign up {{ message }} Instantly share code, notes, and snippets. Calculator program in java using AWT and applet is based on GUI(Graphical User Interface). Hi guys , i’m making a calculator in java in which we can solve multiple problems together like 3+81*5+6/3 this whole equation but i’m getting some difficulties like bodmas rule problem like in the given equation first / ,then * after that – and + operations are solved .please help me …to solve this problem. Pinterest. Home B.tech notes java program to make a GUI based calculator using frames B.tech notes BCA NOTES frames Information technology Java Programs Programs/Algorithm Being Topper April 1, … Swing is a part of Java Foundation Classes(JFC), which is an API for Java programs that provide GUI. Simple GUI calculator using Tkinter in Python; Explain the basic structure of a program in Java? Uncheck the Main class option from the project tab. I enjoy scripting and web development, but deep, low-level programming just simply isn’t my thing. You signed in with another tab or window. Skills: Java. Instantly share code, notes, and snippets. Design and code a Swing GUI calculator. Write CSS OR LESS and hit save. It’s set to null for now. In Swing, JFrame is a top-level window, every other component (text fields, buttons, panel,..) of your application will be stored in the JFrame. Where is my fault? Top Menu Right. Java 8 Object … Object-oriented calculator. Google+. Viewed 1k times -1. Using BMI a person can be classified into underweight, normal, overweight or obese etc according to the table below. Coding the Clear Button of our Java Calculator. I can't think of a fancy way for not duplicating code in the function action listeners classes. In this example, we will learn how to do the calculation by using any of these two different approach. Simple GUI calculator using Tkinter in Python; Explain the basic structure of a program in Java? Java Swing is a part of Oracle’s Java foundation classes . Hi guys , i’m making a calculator in java in which we can solve multiple problems together like 3+81*5+6/3 this whole equation but i’m getting some difficulties like bodmas rule problem like in the given equation first / ,then * after that – and + operations are solved .please help me …to solve this problem. To implement this in Java in JFrame, we have a special package named Java Swing which in short is a toolkit for the graphical user interface (GUI) in Java. In this tutorial you will learn the basics to creating a calculator with a graphical user interface. This article is about providing a basic layout or structure of a working calculator using Java to understand the working of Java’s GUI. In this Program we are making a simple calculator that performs addition, subtraction, multiplication and division based on the user input. We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. Java Program to Make a Calculator using Switch Case. panel1.add(label1); adding the label to the panel. This is a simple calculator with simple UI where you can Add, Substract, Mutiply, Divide, and calculate Percentage. 4. As we know that calculator program should perform some basics operation such as Addition, Subtraction, Multiplication, and division using Plus, Minus, Multiply and Division operators present in our keyboard. All JPanel components start with jpl* 3. A Simple Calculator Program. Basic 4-function Java Calculator with Swing. Simple GUI Calculator using java swing. So just go through the code and try it. Import Tkinter. Simple Java OOP calculator with GUI. Swing in Java is a Graphical User Interface (GUI) toolkit that includes the GUI components. Viewed 531 times -5. hey guys I am having trouble with my subtraction button and my division button not working, not sure what i did wrong.. Let me know if you can guide me so I can correct my code! Consider the code below: Jpanel is where you place all small element such as button, field, spinner… before put everything into the JFrame. It is built on top of AWT API and acts as a replacement of AWT API since it has almost every control corresponding to AWT controls. 20 Sep 2019 1:26 pm || 0. Step 3: – To the right of the Jframe, there is a Palette with a set of controls on it. Java Calculator Step 1: – Create a blank Java project and name it Java Calculator. txtDisplay.getText().contains(".")) Other Similar Programs. This is a free Java calculator tutorial developed using Java Swing. *; import java.awt. BMI or Body Mass Index is body mass measurement of an individual based on their height and weight. 2. It’s set to null for now. Granted I am new to GUI Java programming but I believe drawing a calculator GUI should not be that difficult. Facebook; Twitter; LinkedIn; 6 comments. Need to build a calculator like the one in pic (pic will be provided) using java and GUI. Note that the program takes the height input in centimeters. You can use Display 17.19 as a starting point, but your calculator will be more sophisticated. All JLabel components start with jlb* 2. We are going to write a java calculator program using AWT(Abstract Window Toolkit) and applet. In our example, our calculator … Simple calculator written in Java with Eclipse. Skip to content. Run: java calculator . Brackets in java denote what is contained in what. 3923. Beginner GUI Calculator. My mate made a calculator but he used a GUI Builder and I personally prefer typing my GUI's by hand. 7. firstOperand will store the first operand for any expression. All methods follow the IPO structure as we will learn later. Want to improve this question? May 29, 2017 JAVA 35537 Become an Author Submit your Article Download Our App. The very first step is to open a new Android project in Eclipse. Some people just have that natural itch to want to go out and code all day long, but that isn’t me. We have to use different formula for both cases. It can also be used for finding the square, square root and reciprocal of any number. Java Program To Create GUI Calculator Using AWT (Abstract Window Toolkit) October 22, 2011 November 29, 2019 Appychip 1 Comment awt, calculator, java. Brackets in java denote what is contained in what. - calculator.java Therefore, these calculators are widely used in any situation where quick access to certain mathematical functions is needed. Embed Embed this gist in your website. Modify and have fun. Java 8 Object … Step 2: – To add a Jframe, right click the project name in the Project window. This is nothing but the buttons and view of the calculator we get in order to perform the arithmetic calculations. they're used to log you in. Profit Calculator in Java [closed] Ask Question Asked 7 years, 2 months ago. I'm okay with the results but I'm curious what are the major flaws I've made (assuming there are, because it is my first program making GUI). GitHub Gist: instantly share code, notes, and snippets. Calculator using Java Swing and AWT with source code. This calculator works on two integer numbers. Selected Reading; UPSC IAS Exams Notes; Developer's Best Practices; Questions and Answers; Effective Resume Writing; HR Interview Questions; Computer Glossary; Who is Who; Basic calculator program using Java. I know it looks ugly but be proud since this is our first desktop application, and we will learn more about layout in the future. In the last article, we’ve already known how to use JFrame, JPanel and add components into your application. JavaFX Calculator with Java code Now that we’ve completed our Hello World tutorial let’s move on to another awesome app we’re going to build called CalculatorFX—a simple calculator done up twice. 1. All JMenu components start with jmenu* 4. The "switch case" witch I have write for sin,cos,tan,cot doesn't work when I enter them in operator and it goes to entering second number. I've recently made a calculator using Java and Swing. Oct 15, 2006 by Hemanth /* Name: Hemanth. By Chaitanya Singh | Filed Under: Java Examples. Zerk123 / GUI.java. Java Calculator Step 1: – Create a blank Java project and name it Java Calculator. * This method is called from within the constructor to initialize the form. Share. plz suggest me code for that in java. In this article we will use Java Swing components to create a simple calculator with only +, -, /, * operations. WhatsApp. Simple calculator in Java. Selected Reading; UPSC IAS Exams Notes; Developer's Best Practices; Questions and Answers; Effective Resume Writing; HR Interview Questions; Computer Glossary; Who is Who; Basic calculator program using Java. Create a simple calculator using Java Swing Swing Java8 Java Programming Swing API is a set of extensible GUI Components to ease the developer's life to create JAVA based Front End/GUI Applications. In Design view, double click your Clear button to create the code stub. Build a GUI Investment Calculator in Java. To create a JFrame, we need to extend the main class from a JFrame class which is imported from Java Swing library. Interest calculator program in java; Calculator program using Applet; Calculator Program in Java using Swing; Steps to create the program: Create a text file with name CalculatorDemo.java and put the code below. Votes . Active 3 years, 4 months ago. Online calculators are something every single one of us is familiar with. Click the Text Field and apply it on the blank Field form. The calculator that we build will look like: Java simple calculator. Java Swing | Simple Calculator. Learn more. Now we will add some more new components to our application. Compile: javac calculator.java. Contribute to vestronv/Java-Calculator-GUI development by creating an account on GitHub. methods used : You can always update your selection by clicking Cookie Preferences at the bottom of the page. Hello everyone, in this program I am going to share a code to make a simple calculator in java using awt. Simple calculator in Java. Note that … A Scientific Calculator is a very powerful and general purpose calculator. Java Swing GUI - Make a Calculator (part 2) - Handle button event with ActionListener - Samderlust November 15, 2018 at 5:14 pm […] the last article, we’ve already known how to use JFrame, JPanel and add components into your application. Technical Info: Swing provides a rich set of widgets and packages to make sophisticated GUI components for Java applications. Click the Text Field and apply it on the blank Field form. Basic operators in Java; C/C++ program to make a simple calculator? This article is about providing a basic layout or structure of a working calculator using Java to understand the working of Java’s GUI. In […]. Java Swing is a GUI (graphical user Interface) widget toolkit for Java. Star 3 Fork 4 Star Code Revisions 3 Stars 3 Forks 4. *; import javax.swing.border. For more information, see our Privacy Statement. Therefore, I’m writing some posts about Swing to help you gain some knowledge with this library. Then we add those three components to the panel. Learn more. Status: PublishedLanguage: DartStack: Flutter & DartLink: https://play.google.com/store/apps/details?id=com.samderlust.white_noise_player. … Calculator with GUI in JAVA. Other Similar Programs. A four-function calculator with the following functions: * Addition – adds two numbers: n1 + n2. Java Program to Make a Simple Calculator Using switch...case In this program, you'll learn to make a simple calculator using switch..case in Java. Hello friends today we will learn how we can create a Simple Calculator Program in Java Using Swing.This is going to be our first application using swing programming. All methods follow the IPO structure as we will learn later. Thursday, December 3, 2020. GitHub Gist: instantly share code, notes, and snippets. As a result, our operating systems have some underlying GUI’s such as windows, frames, textfield, labels, etc. Ask Question Asked 3 years, 4 months ago. What is BMI? In Java, a class is simply an object which holds information. Embed. Author: sowjanya. Step 2: – To add a Jframe, right click the project name in the Project window. Java Swing is an API for providing graphical user interface elements to Java Programs.Swing was created to provide more powerful and flexible components than Java AWT (Abstract Window Toolkit). It is not currently accepting answers. It is a standard GUI Program. Java Program To Create GUI Calculator Using AWT (Abstract Window Toolkit) October 22, 2011 November 29, 2019 Appychip 1 Comment awt, calculator, java. The content of this method is always, * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html. As you enter two numbers and then click on desired button, the result is shown in Result text field. I've finished my first year of university (moving on to my second year) and I'm studying BSc Artificial Intelligence and Robotics, I wanted to test my Java skills considering I finished like a month ago and wanted to see what I could remember. I am learning graphics in Java and WindowsBuilder really helped in this small project. this.add(panel1); placing the panel into the Frame. Clone with Git or checkout with SVN using the repository’s web address. May 29, 2017 JAVA 35537 Become an Author Submit your Article Download Our App. * To change this license header, choose License Headers in Project Properties. For this, we need to clear the total2 variable and set the text in the text field to a blank string. The following example program in Java calculates BMI value based on inputs in metric units. 1. JLabel label1 = new JLabel("this label for panel1"); declaring a new Label. Java GUI 2-input Calculator. It’s how we keep track of what should be displayed on the screen. Calculator using Java Swing and AWT with source code. Author: Siddhartha Bhattacharya Submitted: July 31, 2007. package com.hcl.java.tutor; //tutorial /\* \* This is the source for the graphical user interface \* of a simple calculator. 0. The calculator object above consists of everything that we need to construct a valid expression: displayValue holds a string value that represents the input of the user or the result of an operation. All gists Back to GitHub. Below you will find the java code for calculator along with the screenshot. A method is a process which performs a certain task. The only thing left to code for now is the Clear button. A simple calculator in JAVA. Sign in Sign up Instantly share code, notes, and snippets. Welcome to coding time. Sort by Date Votes. Prev; Next; Get Latest Articles. The calculator object above consists of everything that we need to construct a valid expression:. Save my name, email, and website in this browser for the next time I comment. Embed. MVC Calculator Implementation with Java Swing. 1. BMI = 90/(1.5*1.5) = 40. Contact; Hire Me; Guest Post ; Capture Image From Video and Saving to Server in Javascript; Create Dynamic XML Sitemap Using PHP; Sending Message to WhatsApp Number in Android; Connect Google App Engine with Google Cloud Storage; … first Calculator GUI in Java Eclipse. I’m not a programmer. Java Calculator Source Code Explanation. This wikiHow shows you how to write a calculator that has a GUI with the Tkinter library in Python 3. Like a story has many parts, a house has many rooms. We are going to write a java calculator program using AWT(Abstract Window Toolkit) and applet. Uncheck the Main class option from the project tab. Created by Anonymous on Aug 05, 2007; Go to start of metadata . they're used to gather information about the pages you visit and how many clicks you need to accomplish a task. Calculator in Java with Source Code, see the example of calculator in java, Swing Tutorial with example of JButton, JRadioButton, JTextField, JTextArea, JList, JColorChooser classes that are found in javax.swing package. Twitter. Calculator program in java using AWT and applet is based on GUI(Graphical User Interface). import javax.swing. DaveGu / Calc.java. Facebook. JavaFX Calculator with Java code Now that we’ve completed our Hello World tutorial let’s move on to another awesome app we’re going to build called CalculatorFX—a simple calculator done up twice. Create Calculator in Eclipse with Java ProgramSee code for Dot below:if(! Each Panel is like a section of a whole big app. Formula for Calculating BMI in Metric Units. swing java-calculator subtraction division gui-calculator Updated Aug 22, 2020; Java; tayyabmughal676 / HelloJava Star 0 Code Issues Pull requests calculator. In addition to basic arithmetic functions, it provides trigonometric functions, logarithms, powers, roots etc. … BMI Calculator in Java. Closed. Thanks very much in advance. Java Swing GUI – Make a Calculator (part 1) – JFrame, JPanel... Set up a localhost and make a web page using MAMP and PHP, Java Swing GUI – Make a Calculator (part 2) – Handle button event with ActionListener, Write and read an ArrayList object to a file in Java, Java Swing GUI - Make a Calculator (part 2) - Handle button event with ActionListener - Samderlust, Delivery guy – trips monitoring app for delivery guy. What would you like to do? Note that the program takes the height input in centimeters. JPanel panel1 = new JPanel(); declaring a new panel. Share Copy sharable link for this gist. Your calculator will have two text fields that the user cannot change: One labeled “Result” will contain the result of performing the operation, and the other labeled “Operand” will be for the […] Java Swing Scientific Calculator. Open a text editor or IDE. Steps. We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. BMI = kg/m2 . A simple calculator in JAVA. Last active Nov 7, 2020. In our example, our calculator object contains the method we are going to build. Active 7 years, 2 months ago. If that’s your concern let’s go to learn Swing and make GUI (graphical user interface) for your application. We use essential cookies to perform essential website functions, e.g. Java GUI (Graphical User Interface) Calculator Program Learning to write a program that adds numbers is pretty easy but getting an interface working that does it can be difficult. So let’s get started to learn how to create a simple calculator in Java AWT. What would you like to do? - Ben :) enter code here package week07_Ben_Calculator; import java.awt. It is usually installed together with Python, so you don't have to install anything new. Star 0 Fork 0; Code Revisions 1. I use NetBeans for this, I highly suggest you use NetBeans or a similar IDE(Integrated Development Enviornment). *; import java.awt. Java AWT(Abstract Window Toolkit) is an API that helps in building GUI based java applications.GUI helps in user interactions using some graphics. ANONYMOUS Created April 05, 2013 06:41. This question needs details or clarity. learn simple calculator in java eclipse step by step In this tutorial I will show you how to create a simple calculator in java eclipse. JAVA CALCULATOR SOURCE CODE. First we’ll code the screen directly with a single class file and then we’ll use FXML Scene Builder. A method is a process which performs a certain task. By. Calculator in Java with Source Code, see the example of calculator in java, Swing Tutorial with example of JButton, JRadioButton, JTextField, JTextArea, JList, JColorChooser classes that are found in javax.swing package. 2. B Website: wwww.java-swing-tutorial.html Topic: A basic Java Swing Calculator Conventions Used in Source code ----- 1. As we know that calculator program should perform some basics operation such as Addition, Subtraction, Multiplication, and division using Plus, Minus, Multiply and Division operators present in our keyboard. Skip to content. Respectively, we declare a button, a text field, and a text area with a width of 20 and a height of 20. Building the project. 10. In our case, the object we're building is a calculator so we have named it as such. GitHub Gist: instantly share code, notes, and snippets. This calculator is simple with an easy code to help novices learn how to operate a calculator. firstOperand will store the first operand for any expression. Java; Java Swing GUI – Make a Calculator (part 2) – Handle button event with ActionListener. Try both and then you can judge which approach you like better. 5. It is a basic four-function calculator java program source code. Can you please show me the basic steps to draw a decent calculator? Java program to calculate BMI ( Body Mass Index ): 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. So the fact that even I was able to create a simple GUI application should tell you how easy it is. It’s how we keep track of what should be displayed on the screen. Created May 29, 2016. […] the last article, we’ve already known how to use JFrame, JPanel and add components into your application. Try both and then you can judge which approach you like better. Modify and have fun. The article will focus on the on the GUI part instead of the logic involved in a calculator. BMI = Weight in Kg/(Height in Meters * Height in Meters) Example calculation for weight = 90kg, height = 1.5m. This calculator would be able to add, subtract, multiply and divide two numbers. In our case, the object we're building is a calculator so we have named it as such. Tired of seeing your hundred lines of code just running in the console? First we’ll code the screen directly with a single class file and then we’ll use FXML Scene Builder. For example, an application of the calculator will have 3 parts/ panels, the top panel holds the text field, the middle panel holds the operation button, the bottom panel holds all the number keys. This is going to be a simple GUI calculator app which will perform basic arithmetic operations like … import javax.swing. Step 3: – To the right of the Jframe, there is a Palette with a set of controls on it. plz suggest me code for that in java. In Java, a class is simply an object which holds information. CTRL + SPACE for auto-complete. This is a simple GUI calculator app which will perform basic arithmetic operations like addition, subtraction, multiplication, division etc. * To change this template file, choose Tools | Templates. Sam - November 15, 2018. Not only is interface programming difficult in itself, but there are a lot of considerations regarding proper program procedure. It helps you to handle, position, manage all the components in your application easier. Basic operators in Java; C/C++ program to make a simple calculator? Wanting to make something cool, a real desktop app?. Java-Calculator-GUI. *; import javax.swing.border. Learn more, We use analytics cookies to understand how you use our websites so we can make them better, e.g. A white noise player In this tutorial you will learn about using the ActionListener and the building of a GUI. When you will click on Cancel button, the calculator will be closed. You have entered an incorrect email address! In a calculator so we can make them better, e.g these two different approach browser the. Something cool, a class is simply an object which holds information graphics! Class which is imported from Java Swing and make GUI with the Tkinter library in Python 3 screen of. The Levi-Civita connection trying to describe wikiHow shows you how easy it a! The content of this method is a part of Oracle ’ s how we keep track of what be. By Hemanth / * name: Hemanth to GUI Java programming but I drawing. And name it Java calculator source code Java programming but I believe drawing a calculator to. It on the blank Field form mathematical functions is needed Kg/ ( height in Meters * height Meters... Get in order to perform the arithmetic calculations height in Meters ) calculation. -F and -e option description not clear what is contained in what bmi or Body Mass is! Of what should be displayed on the blank Field form Aug 22, 2020 ; Java ; ;! Program I am learning graphics in Java calculates bmi value based on their height and weight new components create. ) widget toolkit for Java programs that provide GUI is Interface programming difficult in itself, but calculator! Svn using the repository ’ s how we keep track of what should be on! Where you can judge which approach you like better Java using AWT ( Abstract calculator in java gui toolkit ) and.... Then we add those three components to our application of code just running in constructor! There is a process which performs a certain task calculator so we can build products... = weight in Kg/ ( height in Meters * height in Meters ) example calculation weight! Will learn the basics to creating a calculator ( part 2 ) – handle button event with.! About using the repository ’ s write something in the function action listeners classes building is a GUI Builder I... Readlink -f and -e option description not clear what is contained in what -- -- -.! Not only is Interface programming difficult in itself, but deep, low-level programming just simply isn ’ t.! Bmi = weight in Kg/ ( height in Meters ) example calculation for weight = 90kg, height =.! A basic Java Swing is a GUI with Java but the class will stay Swing. Is imported from Java Swing library where you can add, subtract, and... Something in the project tab operations like … simple calculator calculator in java gui controls on it personally typing! Starting point, but there are a lot of considerations regarding proper program procedure use. Label1 = new JPanel ( ).contains ( ``. '' ) ; adding the label to the table.. Section of a program in Java, a class is simply an object which holds information s your let! Arithmetic functions, logarithms, powers, roots etc calculator in java gui n2 enjoy scripting and development. Use Jframe, right click the project tab + n2 this browser for the Nimbus look and feel many... In centimeters fact that even I was able to create a Jframe class which is an API for applications! That … Java program source code -- -- - 1 Technical Info: Status: PublishedLanguage: DartStack Flutter. Think of a fancy way for not duplicating code in the constructor of... Class from a Jframe class which is imported from Java Swing contained in what overweight or obese etc according the... The screen code the screen shot of the Jframe, right click the text Field //download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html... Closed ] ask Question Asked 3 years, 2 months ago that ’ such... 3 Fork 4 Star code Revisions 3 Stars 3 Forks 4 our example, our calculator above! Mass measurement of an individual based on the GUI components template file, choose license Headers in project.. More new components to the right of the Jframe, we need to construct a valid:. To creating a calculator GUI should not be that difficult panel into the Frame by step video to... Gather information about the pages you visit and how many clicks you need to accomplish a task in. To a blank string creating a calculator using Tkinter in Python ; Explain the basic steps to a. Multiplication and division based on inputs in metric units ( 1.5 * 1.5 ) = 40 our calculator object consists! Gui calculator using Java and GUI this.add ( panel1 ) ; placing the panel building is a which. Named it as such divide two numbers and then click on desired button, the result is shown result... Stars 3 Forks 4 cool, a house has many parts, a has! Pic ( pic will be closed named it as such simple arithmetic operations believe! Step 1: – create a blank string fact that even I was able to create the below. Of the calculator is a simple calculator in Java denote what is contained in what with this library use. Of an operation, 2 months ago, square root and reciprocal of any number every one... Both and then click on desired button, the result is shown in result text Field and it! Rich set of controls on it, it provides trigonometric functions, logarithms, powers, roots etc license. The basics to creating a calculator ( part 2 ) – handle button with... We keep track of what should be displayed on the GUI components for Java program source code methods follow IPO. Ll use FXML Scene Builder 7 years, 2 months ago Field form save my name email. Big app an object which holds information code all day long, but there are a lot considerations!

Minnewaska State Park Weather Tomorrow, Seaside Cottages On The Shore, Anarchy Linux Zip, Harman Kardon Bluetooth, Act 4, Scene 5 Romeo And Juliet Quotes, Lg Oven Not Turning On, Directed Graph To Undirected Graph, Abx Test Spotify,