If you need, you can execute the clean command before the rebuild using the Execute Before Rebuild option in the Gradle or Maven tool window. When the Rebuild Project action is delegated to Gradle or Maven, IntelliJ IDEA doesn't include the clean task/goal when rebuilding a project. IntelliJ IDEA displays the build results in the Review compilation and build output. Rebuild a module, or a projectįrom the main menu, select Build | Rebuild Project for the entire project or Build | Rebuild 'module name' for the module rebuild. For example, SDKs or libraries that the project uses are added, removed or altered. It might be helpful, when the classpath entries have changed. When you execute a rebuild command, IntelliJ IDEA cleans out the entire output directory, deletes the build caches and builds a project, or a module from scratch. If any two JAR files contain classes with the same name, the IntelliJ IDEA compiler will use the classes from the first JAR file it locates in the classpath.įor more information, see Module dependencies. The way the module dependencies are ordered may be very important for the compilation to succeed. If the dependent module has its own module dependencies, then IntelliJ IDEA compiles all of them recursively starting with the least dependent module. If you add a module dependency to your primary module and build the module, IntelliJ IDEA builds the dependent module as well and displays it in the output directory alongside the primary one. IntelliJ IDEA displays the compilation results in the Review compilation and build output. Select a module or a project you want to compile and from the main menu, select Build | Build Project ( Ctrl+F9). IntelliJ IDEA also recursively builds the classes' dependencies. When you change any class inside the build target and then execute the build action, IntelliJ IDEA performs the incremental build that compiles only the changed classes. When you execute the Build command, IntelliJ IDEA compiles all the classes inside your build target and places them inside the output directory. Change the location of the output folder under the Compiler output section. In Project Settings, select Project and in the Project compiler output field, specify the corresponding path.įor modules, select Modules, the module you need and the Paths tab. Open the Project Structure dialog ( File | Project Structure Ctrl+Alt+Shift+S). If you do so (say, specify some instead of /out) but don't redefine the paths at the module level, the compilation results will go to /production/ and /test/.Īt the module level, you can specify any desirable compilation output location for the module sources and tests individually. The default paths for subdirectories are as follows:Īt the project level, you can change the /out part of the output path. Inside the output directory, IntelliJ IDEA also creates subdirectories for each of your modules. When you compile your source code, IntelliJ IDEA automatically creates an output directory that contains compiled. If errors occur during the compilation process, IntelliJ IDEA will display them in the Review compilation and build output along with warning messages. Open the needed file in the editor and from the main menu, select Build | Recompile 'class name' ( Ctrl+Shift+F9).Īlternatively, in the Project tool window, right-click the class you need and from the context menu, select Recompile 'class name'. In this case, the build delegation to Gradle or Maven can help you build your project correctly. However, IntelliJ IDEA native builder might not correctly build the Gradle or Maven project if its build script file uses custom plugins or tasks. If you have a pure Java or a Kotlin project we recommend that you use IntelliJ IDEA to build your project since IntelliJ IDEA supports the incremental build which significantly speeds up the building process. You can compile a single file, use the incremental build for a module or a project, and rebuild a project from scratch.
IntelliJ IDEA uses a compiler that works according to the Java specification.
The IntelliJ IDEA compilation and building process compiles source files and brings together external libraries, properties files, and configurations to produce a living application. Compile and build applications with IntelliJ IDEA
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