This is the folder that will contain your source code.
Click the plus or arrow symbol next to it to expand that project, then select the yellow "src" source folder. On the left-hand side, in the Package Explorer, you should now see a blue "LabA" project folder. Note that Eclipse has A LOT of customizable configuration options you can set when creating a project in general, we'll be fine with defaults. Name the project "LabA" and then click "Finish" to create the project. On the menu bar, click File > New > Java Project to open the New Java Project dialog box. It should look something like this:įirst we need to create a Java project to work on. Click the close icon on the Welcome tab to show the main project window. In either case, remember where this folder is!! Eclipse will then open to a Welcome screen. You can accept the default location, or choose a different one (I recommend default location, and select the "Use this as default" option to avoid being nagged in the future). Double-click this to start the IDE.Įclipse will prompt you for a folder to make into your workspace. Inside that folder should be a number of files eclipse.exe or Eclipse.app is the program to launch.
On Windows, I put the Eclipse folder in "Program Files", and on a Mac a put it in "Applications". Unzip the downloaded file to a convenient folder where you'll be able to get to it regularly.
You will need to download the copy of the zippedĭownload the Eclipse IDE as described above. In a separate window and find the link for the version of Eclipse for your computer (if you get lost, you're looking for the "Eclipse IDE for Java Developers"). You will need to download the Eclipse IDE.
For example if the variable evt represents the ActionEvent object, the code can look like this:īutton clickedButton = ( Button ) evt. You can do the label of the clicked button by querying the ActionEvent object that will be provided for each event handler method. In each handler method add the code to recognize which button has been clicked.Modify the file calculator.fxml and assign the name of the click handler method for each button using the attribute onAction as we did in the Sign In example.Name the second method operationClickHandler – it will contain the code to process clicks on such buttons as Plus, Minus, et al. Name the first method digitClickedHandler – it will contain the code to process clicks on the digit buttons.
Create two separate event handler methods in the class CalculatorController.
Use the code of signing.fxml from this chapter as reference. Modify the file calculator.fxml: add the attribute fx:controller="CalculatorController" so it knows the name of the class with the application logic.Create a Java class CalculatorController in the same IDEA project where the calculator’s GUI is located.