BuildR is an extension of the Rake build tool for Apache projects that allows defining and building Java projects. It provides features like defining dependencies, compiling code, packaging artifacts, custom tasks, testing, and calling other build tools like Ant from within a BuildR project definition. BuildR supports languages like Java, Scala, Groovy, and Ruby and provides additional capabilities like an interactive shell, IDE project file generation, and code coverage tools.

1. Building tool of new generationBuildR

2. BuildRExtension of RakeApache project

3. Step 1. Define projectdefine 'killer-app' do project.version= '0.1.0' end

4. Step 2. Add dependenciesrepositories.remote << 'http://www.ibiblio.org/maven2/'repositories.remote << 'http://maven.alfresco.com/nexus/content/groups/public/’LIBS = struct( :alfresco_repo => 'org.alfresco:alfresco-repository:jar:labs:2.1.0', :alfresco_core => 'org.alfresco:alfresco-core:jar:labs:2.1.0', :alfresco_remote => 'org.alfresco:alfresco-remote-api:jar:labs:2.1.0', :apache_collections => 'commons-collections:commons-collections:jar:3.1', :apache_beanutils => 'commons-beanutils:commons-beanutils:jar:1.7.0',)

5. Step 3. Compiledefine 'al', :layout => ab_layout doproject.version = 1.5compile.options.target = '1.5'compile.with LIBSend

6. Step 4. Packagedefine 'al', :layout => ab_layout doproject.version = 1.5compile.options.target = '1.5'compile.with LIBS package :jarend$ buildr package

7. Step 5. Directory structureab_layout = Layout.newab_layout[:source, :main, :java] = 'src'ab_layout[:source, :main, :resources] = 'resources'define 'al', :layout => ab_layout doproject.version = 1.5compile.options.target = '1.5'compile.with LIBS package :jarend

8. Step 6. Add custom task define 'al', :layout => ab_layout doproject.version = 1.5compile.options.target = '1.5'compile.with LIBS task :run => :compile do system 'java -cp target/classes org.apache.killer.Main' endend

9. Step 7. Testdefine 'al', :layout => ab_layout doproject.version = 1.5compile.options.target = '1.5'compile.with LIBStest.with'commons- ollections:commons- collections:jar:3.2' test.using:testngend

10. Step 8. Call java task :generate do p 'calling ant..'Java.org.apache.tools.ant.Main.main( ['-file', 'build.xml', 'generate', '-Dserver=localhost'] ) end

11. LanguagesJavaScalaGroovyRuby

12. Other stuffInteractive Shell (JavaRebelsupport)IDE project file generationCobertura, Emma, Jdepend