Java Build Tools
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Maven and Ant are both build tools for Java projects. Maven uses a project object model (POM) file that defines project dependencies, plugins, and other metadata. It handles tasks like compiling code, running tests, packaging artifacts, and publishing releases. Ant relies on XML configuration files and custom scripts but has less built-in functionality than Maven. Both tools aim to standardize builds and manage dependencies, but Maven's conventions make it generally preferable for new projects.
Java Build Tools
- 2. Desired Features Ant Maven Ant vs Maven CONTENTS
- 3. Whats expected of build • Versioning • Compile Java code, build jars • Execute tests and report results • Run quality-check tools (PMD, Findbugs..) • Build vs. deploy vs. release • Cross-platform • IDE Support • Documentation / Support tools
- 4. Java-based build tool Mature Stable Rich library of tasks WHY ANT!
- 5. Ant With Convention Over Configuration Dependency Management Uniform Build System. Project Structure. Coherent site of project information along-with Internationalization. Release management and distribution publication. WHY MAVEN!
- 6. Concerns to build a project Project directory structure Directory naming conventions The build output
- 7. Contains project information and configuration details used to build the project ◦ – Project dependencies ◦ – Commands (goals) that can be executed Project Object Model ◦ – Plugins ◦ – Metadata The minimum requirement for a POM are the following: ◦ project root ◦ modelVersion - should be set to 4.0.0 ◦ groupId - the id of the project's group. ◦ artifactId - the id of the artifact (project) ◦ version - the version of the artifact under the specified group e.g.: ◦ <modelVersion>4.0.0</modelVersion> ◦ <groupId>com.cisco.ccw.config</groupId> ◦ <artifactId>ConfigService</artifactId> ◦ <packaging>jar</packaging> ◦ <version>7.0</version> ◦ <name>CCW Config Services</name> ◦ <url>http://www.cisco.com</url>
- 11. Build Lifecycle and Phases Most important default phases: ◦ Validate ◦ Compile ◦ Test ◦ Package ◦ Install ◦ Deploy Some common phases not default: ◦ Clean ◦ Site
- 12. Dependency scope Compile: Available in all classpaths (default) Provided: The JDK or the container provides it Runtime: Only required for execution, not for compilation Test: Only required for testing, not for normal use (not deployed) System: You provide it locally, not looked up in a repo <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.4</version> <scope>compile</scope> </dependency>
- 13. FEATURES ANT MAVEN Dependency Management Versioning Manually defined Compile Java code, build jars Execute tests, report results, fail build on failed tests Build vs. deploy vs. release Manually defined Full control when needed Custom XML Write custom “scripts” plugin or embedded Ant script Documentation / Support Excellent Growing but still Ant vs Maven inconsistent Run quality check tools (PMD, FindBugs, JavaDoc) 3rd party task 3rd party plugins libraries File generation (XmlBeans, XSL, Velocity, AspectJ) 3rd party task 3rd party plugins libraries Generating the Site
- 14. Reference http://en.wikipedia.org/wiki/List_of_build_automation_softwar e http://maven.apache.org/maven-features.html