Knowledge of the JavaScript frameworks Knockout and Require is helpful for working through this tutorial, though not mandatory. Hence, the more you are familiar with them, the easier will be your journey into JET. Type the name of the application, such as CustomerVisualizer , and select a location to store it, as shown below. When the unzip process is complete, the IDE displays a node for the project in the Projects window.
Spend some time exploring the project structure of the application. Right-click the project and choose Run. The browser opens and displays the template, as shown below. Spend some time exploring the template in the browser.
For example, resize the browser and notice that responsive design is built into the template. When the browser is sized for mobile devices, notice the menu along the top disappears and is replaced by a mobile menu instead, as shown below.
In this exercise you will configure your application to benefit from the modularity features provided by JET. Then you will create your first JET module and load it into the application. Type the name of the JET module, which by convention starts with a lowecase letter, such as home , shown below:.
Click Finish. Notice that home. Depending on the target server, the entry page will be either index. Before beginning to code, quickly try running the application to ensure that configuration between the IDE, your server, and browser is set up properly.
The application is compiled, the application server starts and the application is deployed to it and run. The IDE opens your default browser and displays the default entry page. Now that you are certain your environment is set up correctly, begin by transforming your index page into the auto-completion interface that will be viewed by users. One of the advantages of using an IDE is that the editor you work in often provides you with code completion which, if you learn to apply it when you code, can rapidly increase your productivity.
The Palette provides easy-to-use templates for elements that are commonly applied in the technology you are coding in. You simply click on an item, and drag it to a location in the file open in the Source Editor. You can view large icons as displayed here by right-clicking in the Palette and choosing Show Big Icons.
The index page requires no server-side scripting code, so you can safely delete any remnants that were created by default. The index page should now appear as shown below. Add some explanatory text to describe the purpose of the text field. Add an HTML form to the page.
The Insert Form dialog box opens. Specify the following:. Click OK. GET is applied by default, and so is not explicitly declared. Add an HTML table to the page. The Insert Table dialog box opens. Right-click inside the Source Editor and choose Format. This tidies up the code. Your form should now display similar to that below:. Within the first row of the table, type the following text into the first column changes in bold :.
Within the second column of the first row, instead of dragging a Text Input field from the Palette, type in the code below manually changes in bold :. A list of suggested options displays below your cursor, and a description of the selected element appears in a box above.
You can in fact press Ctrl-Space at anytime you are coding in the Source Editor to bring up possible options. Also, if there is only one possible option, pressing Ctrl-Space will automatically complete the element name.
The onkeyup attribute that you typed in above points to a JavaScript function named doCompletion. This function is called each time a key is pressed in the form text field, and maps to the JavaScript call depicted in the Ajax flow diagram above. JavaScript code completion is automatically provided when you code in.
If JavaScript file is not listed, choose Other. Name the file javascript and click Finish. The above code performs a simple browser compatibility check for Firefox 3 and Internet Explorer versions 6 and 7.
Asynchronous interaction implies that the browser can continue to process events in the page after the request is sent. Data is passed in the background, and can be automatically loaded into the page without requiring a page refresh.
In the above example, the parameters are:. The URL autocomplete , and the text entered into the complete-field by the user:. If the interaction is set as asynchronous, a callback function must be specified. The callback function for this interaction is set with the statement:.
This action maps to the HTTP request that is sent to the web server in the above flow diagram. The IDE provides comprehensive support for server-side web programming. This is implemented here using a servlet. Before you begin coding the servlet, set up the data store and the functionality required by the servlet to access data. A HashMap allows you to store pairs of linked items in key-value pairs.
You also create a Composer class that enables the servlet to retrieve data from entries in the HashMap. Name the class ComposerData , and enter com.
This creates a new package to contain the class, as well as other classes that will later be created. You will notice that a warning is displayed in the left margin of the editor because the Composer class cannot be found. Perform the following steps to create the Composer class. Name the class Composer , and choose com. Click Finish. After you create the Composer class if you look at the ComposerData class in the editor you can see that the warning annotations are no longer there.
If you still see warning annotations in ComposerData you can try to resolve the error by adding any missing import statements. Create a servlet to handle the autocomplete URL that is received by the incoming request. Choose Other and select Servlet from the Web category if Servlet is not displayed by default in the popup menu. Name the servlet AutoCompleteServlet , and choose com. Click Next. This panel saves you the step of needing to manually add these details to the deployment descriptor.
Optionally, select "Add servlet information to deployment descriptor. With later versions of the IDE, by default the servlet is registered by a WebServlet annotation instead of in a deployment descriptor. The project will still work if you use the WebServlet annotation instead of a deployment descriptor. The only methods you need to override are doGet , to define how the servlet handles the autocomplete GET request, and init , which needs to initiate a ServletContext so the servlet can access other classes in the application once it is put into service.
Implement init by performing the following steps. Choose Override Method. In the dialog that displays, all classes that AutoCompleteServlet inherits from are displayed. Expand the GenericServlet node and select init Servlet Config config. Add a variable for a ServletContext object and modify init changes in bold :. Add an import statement for ServletContext. You can do this by clicking on the lightbulb icon that displays in the left margin of the Source Editor.
Note that the method declaration was generated when you created the class. To view it, you may need to expand the HttpServlet methods by clicking on the expand icon in the left margin. Add the following variable declarations beneath the AutocompleteServlet class declaration. This creates a HashMap of all composer data, which is then employed by doGet.
As you can see in this servlet, there is nothing really new you need to learn to write server-side code for Ajax processing.
With Ajax, you can also exchange plain text or even snippets of JavaScript which may be evaluated or executed by the callback function on the client. Java EE 8 support, for the first time in Support for JSF 2. Payara integration out of the box for the first time, from The key new feature for Maven users in Apache NetBeans Java compiler arguments, e. An important fix has been done to enable JaCoCo Maven integration , in However, there are multiple other new features, enhancements, and fixes for Gradle users, which together provide comprehensive Gradle tooling for the first time and fills in multiple gaps.
Complete list of fixes for Gradle in Further details on new support for PHP 7. In addition, Apache NetBeans
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