When you build a project, the IDE calls the corresponding target in the project's Ant build script. The IDE compiles the source files and generates the packaged build output, such as a JAR file or WAR file. You can build the main project and all of its required projects, or build any project individually.
To build the main project and its required projects:
The IDE displays the Ant output and any compilation errors in the Output window.
To build an individual project and its required projects:
The IDE displays the Ant output and any compilation errors in the Output window.
To stop building a project: