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Similar lists: Sunday, April 14, Code with C. If the Ant script does not contain targets for some of these functions, the functions are unavailable for the project. To implement these functions you write targets either in your Ant script or in a secondary Ant script.
In general, it is better to use standard "With Existing Sources" project templates for importing projects.
For Eclipse projects, it is best to use the Import Project feature, which creates and configures a standard project for you. Standard projects are easier to maintain in the long term.
However, the free-form project templates can be useful if you have an existing Ant-based project with a complex or idiosyncratic configuration that can not be replicated within a standard project. For example, if you are importing a project with multiple source roots, each of which has a different classpath, and you can not split the source roots into different projects, it might be necessary to use a free-form project template.
This guide focuses on standard projects. Configuring the Classpath and Other Project Settings This section covers the most common tasks in setting up a project, such as setting the project's target JDK, setting the classpath, creating dependencies between projects, and sharing libraries between projects and users. Setting the Main Project When you develop a large application consisting of numerous source folders, it is common to split up your code into separate projects.
Typically, one of these projects serves as the entry point for your application. To tell the IDE which of your projects is the main entry point for your application, you set one project to be the main project. The IDE provides commands that act on the main project. For example, running the Clean and Build Main Project command builds both the main project and all of its required projects.
To set a project as the main project: Right-click the project node in the Projects window, and choose Set as Main Project.
Only one project can be the main project at a time. If available, displays the target JDK's source code and Javadoc documentation. Uses the target JDK's executables javac and java to compile and execute your application.
Compiles your source code against the target JDK's libraries. The JDK version is listed in the Java field. Specify the folder that contains the Java platform as well as the sources and Javadoc needed for debugging. To switch the target JDK of a standard project: Right-click the project's node and choose Properties. Select the Libraries panel. Change the Java Platform property. Managing a Project's Classpath Adding a group of class files to a project's classpath tells the IDE which classes the project should have access to during compilation and execution.
The IDE also uses classpath settings to enable code completion, automatic highlighting of compilation errors, and refactoring.
You can edit the classpath declarations for an existing project in the Project Properties dialog box. In standard Java projects, the IDE maintains separate classpaths for compiling and running your project, as well as compiling and running JUnit tests for Java SE applications. The IDE automatically adds everything on your project's compilation classpath to the project's runtime classpath. You can modify your project's classpath in either of the following ways: Right-click the project's node, choose Properties, select the Libraries category, and modify the listed classpath entries.
You can step into classes and look up Javadoc pages for the classes without configuring anything else. Managing Dependencies Between Projects If your application consists of multiple projects, you have to set up the classpath dependencies between the projects. Typically you set up one main project containing the project main class in Java SE projects , and several required projects. A required project is a project that has been added to another project's classpath. When you clean and build a project, the IDE also cleans and builds its required projects.
The required project's Javadoc and sources are also made available to the receiving project. You can add any required projects to your project by right-clicking the Libraries node in the Projects window, or you can add them by specifying them in the Libraries tab in the Project Properties dialog box. When you want to add a required project, select the project folder whose JAR files you want to add to the classpath the file chooser displays the icon for IDE project folders.
When adding projects in the Project Properties dialog box, make sure that the Build Projects on Classpath checkbox is selected.
If you want to add a free-form project to the classpath of a standard project, you have to add the free-form project's JAR file to the standard project's classpath. To do this, you must first declare all of the free-form project's output files in the Output panel of the free-form project's Project Properties dialog box.
However, by default, the project build script's way of referring to libraries is dependent on factors specific to each user, particularly in the case of libraries defined in the Library Manager dialog box.
For example, normally you can put a project in a zip file and give it to another user to unpack and run. But if the project depends on a custom library that you have specified in the Libraries Manager dialog box, others might initially have problems building the project because of unresolved references to the custom library. Another potential inconvenience is that libraries are stored in a variety of locations, based on where they originate.
Examples of these include the libraries for the Swing Layout Extensions, beans binding, and database drivers. To solve these problems, you can specify a dedicated folder for project libraries. Furthermore, you have control over whether to use an relative path or an absolute path when referring to these libraries.
This flexibility makes it easier for you to handle the following situations: You create a project and need to make it available and buildable to other users, whether they use the IDE or not.
They should be able to access the project through a version control checkout or by unpacking a zip file that you have provided them. Then they should be able build the application without extra configuration.
You must start working on an existing project and adhere to a strict set of conventions concerning where project libraries are stored and whether your build script accesses them with a relative reference or absolute reference. You can set the libraries folder when you create the project in the New Project wizard or afterwards in the Libraries tab of the Project Properties dialog box.
In the Java category of the wizard, select one of the standard templates. Then click Next. In the Libraries Folder field, select the location for the libraries to be stored. If the libraries are already included in the IDE, those libraries will be copied to the folder that you have designated. In the Web category of the wizard, select one of the standard templates. For example, if you are sharing the project over VCS, any properties you set in private.
You can copy a property from project. The definitions in private. Note: In a free-form project, there is no build-impl. The IDE directly calls targets in the project's Ant script. For NetBeans Plugin Module projects, build-impl. For information on editing and running an Ant script, see Section 7. To override a target from an IDE-generated build script: Copy the target from build-impl. Note: You might need to disable the Compile on Save option in project properties, because when enabled it causes some commands to skip calling the ant targets.
To disable the Compile on Save option, right-click your project in the Projects window, select Properties, and clear the Compile on Same checkbox in the Compiling category. To add instructions to be processed before or after an Ant target is run: Override the -pre or -post target for the target. For example, to insert an obfuscator after compilation, type the following in build.
Optionally, add the new target to the dependencies of any of the IDE's existing targets. Override the existing target in build. Notice that you do not have to copy the body of the run target into build. Note: The output folder is deleted every time you clean your project.
Therefore, never set the output folder to the same location as your source folder without first configuring the clean target to not delete the output folder. For information on setting JVM arguments and system properties, see Section 9. By default, both are defined in the main Application class. The controller class implements the interface javafx.
For more information, see Section 6. For more information, see Section Project builds and runs as a standard Java desktop application. Java Web Start. Application uses JNLP. In Browser. To open Project Properties, right-click the project's node in the Projects window and select Properties from the context menu. Instead, these projects rely on your existing Ant script to provide instructions for handling your project source.
For information on how to declare a classpath, see Section 5. To make project sources available to Ant, you need to specify the classpath for the project sources. If you have any custom tasks, you also need to add these tasks to Ant's classpath.
To add a source directory to a free-form project: Build the project so that all of the project's build outputs JAR files and WAR files exist on your computer.
In the Projects window, right-click the project node and choose Properties. Click Sources in the right panel of the Project Properties dialog box and add the source folder.
Click Classpath in the right panel of the Project Properties dialog box and set the classpath for the source directory. Note: The classpath variable you set in the Project Properties dialog box does not affect the actual classpath of the project, which is specified in the Ant script.
Declaring the classpath in the Project Properties dialog box does not change the actual compilation or runtime classpath of the source folders. However, the project classpath variable must match the classpath used by your Ant script in order to provide the correct information for code completion, error highlighting, and refactoring commands. If you change the classpath of one, you must change the class path of the other.
Click Output in the right panel of the Project Properties dialog box and specify the source folder's build output. Click OK. Specifying the Classpath for Custom Tasks In free-form projects, you can call up and run custom Ant tasks in your build script. For your Ant script to use customs tasks, you must include the tasks in the Ant script's classpath. For example, you may add a task to your build script to format your code with Jalopy. You can add custom tasks to Ant's classpath within the IDE by doing either of the following: Providing an explicit classpath to the tasks in your build script.
This is the recommended method for specifying the location of JAR files that contain custom tasks used by your Ant script, as it ensures that your build scripts will be fully portable.
You can write your tasks and include instructions to compile them and produce a JAR file in the build file.
To use these tasks, include the long form of taskdef, which includes a classpath. The script is entirely self-contained and portable.
This method also makes it easier to develop your tasks within the IDE, as the script compiles them for you automatically. To make your build scripts even more robust, use a property instead of a hard-coded location to specify the classpath to your tasks.
You can store the property in the build script itself or in a separate ant. You can then change the classpath setting throughout your script by simply changing the value of the specified property. Configuring the Ant Classpath property in the Options window. If you cannot declare a classpath in your build script, or you are using third-party build scripts which you cannot alter, you can add tasks to Ant's classpath in the IDE in the Options window.
In order for the IDE to know which classes to include in code completion and refactoring, you have to declare the classpath in the project settings. You first declare the classpath in the New Project wizard when creating the project.
You can edit all classpath declarations for an existing project in the Project Properties dialog box. The project's classpath declaration must exactly match the classpath used by your Ant script. To declare the classpath for a project: Build the project so that all of the project's build outputs JAR files and WAR files exist on your computer. Declare the classpath for the project. To set a common classpath for all source folders, unselect the Separate Classpath for Each Source Package Folder checkbox.
Then add or remove classpath elements with the buttons on the right of the dialog box.