# Build configurations

The AspectJ development tools provide the facilty to create multiple named build configurations for an AspectJ project. By default the project will contain one build configuration in a file called build.ajproperties and will build all your source files.

The AspectJ development tools enable the creation of new build configurations, easy exclusion and inclusion of files from existing build configurations and easy switching between build configurations.

AspectJ projects
AspectJ builder

Working with build configurations
Creating a new build configuration
Editing a build configuration
Switching build configurations