Maven has a set of abstract lifecycle; plugins are implementations of these lifecycle phases.

Complete project build process usually includes: clean, compile, test, package, integrated testing, validation, deployment.

Maven lifecycle includes: clean, default(build project), site(generate project site). By lifecycle, I mean if lifecycle is in the sequence of A,B,C, then to execute C would force A and B to be executed beforehand. In maven, lifecycle is clean, compile, test, package, install. Running package would force compile and test to run before package.

  1. clean: pre-clean, clean(clean all files built last time), post-clean;
  2. default: compile, test, package, install;
  3. site: pre-site, site, post-site, site-deploy;

example: plugin> source

Add this into a quickstart created maven project’s pom.xml:

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<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-source-plugin</artifactId>
          <version>2.4</version>
            <executions>
              <execution>
                <phase>package</phase>
                <goals>
                  <goal>jar-no-fork</goal>
                </goals>
              </execution>
            </executions>
    </plugin>
  </plugins>
</build>

This would bind source plugin with package in maven lifecycle, as shown in <phase>package</phase> in execution with the plugin coordinates: groupId, artifactId w. specific goal.

Run clean package in Eclipse Run As Maven Build.

This is the result of an execution:

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[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building moduleName 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ moduleName ---
[INFO] Deleting /Users/.../workspace/moduleName/target
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ moduleName ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /Users/.../workspace/moduleName/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ moduleName ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /Users/.../workspace/moduleName/target/classes
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ moduleName ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /Users/.../workspace/moduleName/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ moduleName ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /Users/.../workspace/moduleName/target/test-classes
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ moduleName ---
[INFO] Surefire report directory: /Users/.../workspace/moduleName/target/surefire-reports

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running com.imooc.projectName.moduleName.AppTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.007 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ moduleName ---
[INFO] Building jar: /Users/.../workspace/moduleName/target/moduleName-0.0.1-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.848 s
[INFO] Finished at: 2020-01-01T17:40:26+08:00
[INFO] Final Memory: 17M/232M
[INFO] ------------------------------------------------------------------------

It’s seen that clean, compile, test, source are executed sequentially.