Mit Java 8 wird im bin Verzeichnis auch das JDeps Tool ausgeliefert. Dieses Tool ermöglicht eine statische Kodeanalyse von der Kommandozeile. Es kann die statischen Abhängigkeiten von Klassen und Jars aufzeigen und auch eine Abhängigkeitsgraphen generieren. So ist man dann für Java 9 vorbereitet.
Das wollen wir einmal ausprobieren. Dazu hole ich mir für mein Testprojekt erst einmal alle Jars und untersuche dann das JUnit 4.12.
Also in der pom.xml folgendes Plugin ergänze und ein „mvn package“ ausführen:
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<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.6.1</version> <configuration> <source>${java.version}</source> <target>${java.version}</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <version>3.0.1</version> <executions> <execution> <id>copy-dependencies</id> <phase>package</phase> <goals> <goal>copy-dependencies</goal> </goals> <configuration> <outputDirectory>${project.build.directory}/alternateLocation</outputDirectory> <overWriteReleases>false</overWriteReleases> <overWriteSnapshots>false</overWriteSnapshots> <overWriteIfNewer>true</overWriteIfNewer> </configuration> </execution> </executions> </plugin> |
So dann haben wir diese Jars:
Wir schauen uns nun mal kurz die Onlinehilfe zu dem Tool mit jdeps -h an:
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Usage: jdeps <options> <classes...> where <classes> can be a pathname to a .class file, a directory, a JAR file, or a fully-qualified class name. Possible options include: -dotoutput <dir> Destination directory for DOT file output -s -summary Print dependency summary only -v -verbose Print all class level dependencies Equivalent to -verbose:class -filter:none. -verbose:package Print package-level dependencies excluding dependencies within the same package by default -verbose:class Print class-level dependencies excluding dependencies within the same package by default -cp <path> -classpath <path> Specify where to find class files -p <pkgname> -package <pkgname> Finds dependences matching the given package name (may be given multiple times) -e <regex> -regex <regex> Finds dependences matching the given pattern (-p and -e are exclusive) -f <regex> -filter <regex> Filter dependences matching the given pattern If given multiple times, the last one will be used. -filter:package Filter dependences within the same package (default) -filter:archive Filter dependences within the same archive -filter:none No -filter:package and -filter:archive filtering Filtering specified via the -filter option still applies. -include <regex> Restrict analysis to classes matching pattern This option filters the list of classes to be analyzed. It can be used together with -p and -e which apply pattern to the dependences -P -profile Show profile or the file containing a package -apionly Restrict analysis to APIs i.e. dependences from the signature of public and protected members of public classes including field type, method parameter types, returned type, checked exception types etc -R -recursive Recursively traverse all dependencies. The -R option implies -filter:none. If -p, -e, -f option is specified, only the matching dependences are analyzed. -jdkinternals Finds class-level dependences on JDK internal APIs. By default, it analyzes all classes on -classpath and input files unless -include option is specified. This option cannot be used with -p, -e and -s options. WARNING: JDK internal APIs may not be accessible in the next release. -version Version information |
Nun öffnen wir eine Kommandozeile im Verzeichnis target/alternateLocation und führen unter Java 1.8 den folgenden Befehl aus (hier Mac OS X). Den Punkt für das aktuelle Verzeichnis nicht vergessen.
/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/bin/jdeps -dotoutput . junit-4.12.jar
Als Ergebnis erhalten wir zwei Dateien. Die summary.dot
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summary.dot digraph "summary" { "junit-4.12.jar" -> "not found"; "junit-4.12.jar" -> "rt.jar"; } |
und die unit-4.12.jar.dot mit allen Abhängigkeiten:
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digraph "junit-4.12.jar" { // Path: junit-4.12.jar "junit.extensions" -> "java.lang"; "junit.extensions" -> "junit.framework (junit-4.12.jar)"; "junit.framework" -> "java.io"; "junit.framework" -> "java.lang"; "junit.framework" -> "java.lang.annotation"; "junit.framework" -> "java.lang.reflect"; "junit.framework" -> "java.util"; "junit.framework" -> "org.junit (junit-4.12.jar)"; "junit.framework" -> "org.junit.internal (junit-4.12.jar)"; "junit.framework" -> "org.junit.runner (junit-4.12.jar)"; "junit.framework" -> "org.junit.runner.manipulation (junit-4.12.jar)"; "junit.framework" -> "org.junit.runner.notification (junit-4.12.jar)"; "junit.runner" -> "java.io"; "junit.runner" -> "java.lang"; "junit.runner" -> "java.lang.reflect"; "junit.runner" -> "java.text"; "junit.runner" -> "java.util"; "junit.runner" -> "junit.framework (junit-4.12.jar)"; "junit.textui" -> "java.io"; "junit.textui" -> "java.lang"; "junit.textui" -> "java.text"; "junit.textui" -> "java.util"; "junit.textui" -> "junit.framework (junit-4.12.jar)"; "junit.textui" -> "junit.runner (junit-4.12.jar)"; "org.junit" -> "java.lang"; "org.junit" -> "java.lang.annotation"; "org.junit" -> "java.util"; "org.junit" -> "org.hamcrest (not found)"; "org.junit" -> "org.junit.internal (junit-4.12.jar)"; "org.junit" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.experimental" -> "java.io"; "org.junit.experimental" -> "java.lang"; "org.junit.experimental" -> "java.util.concurrent"; "org.junit.experimental" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.experimental" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.experimental" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.experimental.categories" -> "java.lang"; "org.junit.experimental.categories" -> "java.lang.annotation"; "org.junit.experimental.categories" -> "java.util"; "org.junit.experimental.categories" -> "org.junit (junit-4.12.jar)"; "org.junit.experimental.categories" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.experimental.categories" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.experimental.categories" -> "org.junit.runner.manipulation (junit-4.12.jar)"; "org.junit.experimental.categories" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.experimental.categories" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.experimental.categories" -> "org.junit.validator (junit-4.12.jar)"; "org.junit.experimental.max" -> "java.io"; "org.junit.experimental.max" -> "java.lang"; "org.junit.experimental.max" -> "java.lang.annotation"; "org.junit.experimental.max" -> "java.util"; "org.junit.experimental.max" -> "junit.framework (junit-4.12.jar)"; "org.junit.experimental.max" -> "org.junit.internal.requests (junit-4.12.jar)"; "org.junit.experimental.max" -> "org.junit.internal.runners (junit-4.12.jar)"; "org.junit.experimental.max" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.experimental.max" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.experimental.max" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.experimental.max" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.experimental.results" -> "java.io"; "org.junit.experimental.results" -> "java.lang"; "org.junit.experimental.results" -> "java.util"; "org.junit.experimental.results" -> "org.hamcrest (not found)"; "org.junit.experimental.results" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.experimental.results" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.experimental.results" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.experimental.runners" -> "java.lang"; "org.junit.experimental.runners" -> "java.lang.reflect"; "org.junit.experimental.runners" -> "java.util"; "org.junit.experimental.runners" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.experimental.runners" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.experimental.theories" -> "java.lang"; "org.junit.experimental.theories" -> "java.lang.annotation"; "org.junit.experimental.theories" -> "java.lang.reflect"; "org.junit.experimental.theories" -> "java.util"; "org.junit.experimental.theories" -> "org.junit (junit-4.12.jar)"; "org.junit.experimental.theories" -> "org.junit.experimental.theories.internal (junit-4.12.jar)"; "org.junit.experimental.theories" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.experimental.theories" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.experimental.theories" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.experimental.theories.internal" -> "java.lang"; "org.junit.experimental.theories.internal" -> "java.lang.annotation"; "org.junit.experimental.theories.internal" -> "java.lang.reflect"; "org.junit.experimental.theories.internal" -> "java.util"; "org.junit.experimental.theories.internal" -> "org.junit (junit-4.12.jar)"; "org.junit.experimental.theories.internal" -> "org.junit.experimental.theories (junit-4.12.jar)"; "org.junit.experimental.theories.internal" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.experimental.theories.suppliers" -> "java.lang"; "org.junit.experimental.theories.suppliers" -> "java.lang.annotation"; "org.junit.experimental.theories.suppliers" -> "java.util"; "org.junit.experimental.theories.suppliers" -> "org.junit.experimental.theories (junit-4.12.jar)"; "org.junit.internal" -> "java.io"; "org.junit.internal" -> "java.lang"; "org.junit.internal" -> "java.lang.annotation"; "org.junit.internal" -> "java.lang.reflect"; "org.junit.internal" -> "java.text"; "org.junit.internal" -> "java.util"; "org.junit.internal" -> "org.hamcrest (not found)"; "org.junit.internal" -> "org.junit (junit-4.12.jar)"; "org.junit.internal" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.internal" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.internal" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.internal.builders" -> "java.lang"; "org.junit.internal.builders" -> "java.lang.annotation"; "org.junit.internal.builders" -> "java.lang.reflect"; "org.junit.internal.builders" -> "java.util"; "org.junit.internal.builders" -> "junit.framework (junit-4.12.jar)"; "org.junit.internal.builders" -> "org.junit (junit-4.12.jar)"; "org.junit.internal.builders" -> "org.junit.internal.runners (junit-4.12.jar)"; "org.junit.internal.builders" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.internal.builders" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.internal.builders" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.internal.builders" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.internal.matchers" -> "java.io"; "org.junit.internal.matchers" -> "java.lang"; "org.junit.internal.matchers" -> "java.lang.reflect"; "org.junit.internal.matchers" -> "org.hamcrest (not found)"; "org.junit.internal.matchers" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.internal.requests" -> "java.lang"; "org.junit.internal.requests" -> "java.util"; "org.junit.internal.requests" -> "org.junit.internal.builders (junit-4.12.jar)"; "org.junit.internal.requests" -> "org.junit.internal.runners (junit-4.12.jar)"; "org.junit.internal.requests" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.internal.requests" -> "org.junit.runner.manipulation (junit-4.12.jar)"; "org.junit.internal.runners" -> "java.lang"; "org.junit.internal.runners" -> "java.lang.annotation"; "org.junit.internal.runners" -> "java.lang.reflect"; "org.junit.internal.runners" -> "java.util"; "org.junit.internal.runners" -> "java.util.concurrent"; "org.junit.internal.runners" -> "junit.extensions (junit-4.12.jar)"; "org.junit.internal.runners" -> "junit.framework (junit-4.12.jar)"; "org.junit.internal.runners" -> "org.junit (junit-4.12.jar)"; "org.junit.internal.runners" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.internal.runners" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.internal.runners" -> "org.junit.runner.manipulation (junit-4.12.jar)"; "org.junit.internal.runners" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.internal.runners" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.internal.runners.model" -> "java.lang"; "org.junit.internal.runners.model" -> "java.lang.reflect"; "org.junit.internal.runners.model" -> "java.util"; "org.junit.internal.runners.model" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.internal.runners.model" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.internal.runners.model" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.internal.runners.model" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.internal.runners.rules" -> "java.lang"; "org.junit.internal.runners.rules" -> "java.lang.annotation"; "org.junit.internal.runners.rules" -> "java.lang.reflect"; "org.junit.internal.runners.rules" -> "java.util"; "org.junit.internal.runners.rules" -> "org.junit (junit-4.12.jar)"; "org.junit.internal.runners.rules" -> "org.junit.rules (junit-4.12.jar)"; "org.junit.internal.runners.rules" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.internal.runners.statements" -> "java.lang"; "org.junit.internal.runners.statements" -> "java.lang.management"; "org.junit.internal.runners.statements" -> "java.util"; "org.junit.internal.runners.statements" -> "java.util.concurrent"; "org.junit.internal.runners.statements" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.internal.runners.statements" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.matchers" -> "java.lang"; "org.junit.matchers" -> "org.hamcrest (not found)"; "org.junit.matchers" -> "org.hamcrest.core (not found)"; "org.junit.matchers" -> "org.junit.internal.matchers (junit-4.12.jar)"; "org.junit.rules" -> "java.io"; "org.junit.rules" -> "java.lang"; "org.junit.rules" -> "java.lang.management"; "org.junit.rules" -> "java.util"; "org.junit.rules" -> "java.util.concurrent"; "org.junit.rules" -> "org.hamcrest (not found)"; "org.junit.rules" -> "org.junit (junit-4.12.jar)"; "org.junit.rules" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.rules" -> "org.junit.internal.matchers (junit-4.12.jar)"; "org.junit.rules" -> "org.junit.internal.runners.statements (junit-4.12.jar)"; "org.junit.rules" -> "org.junit.matchers (junit-4.12.jar)"; "org.junit.rules" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.rules" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.runner" -> "java.io"; "org.junit.runner" -> "java.lang"; "org.junit.runner" -> "java.lang.annotation"; "org.junit.runner" -> "java.lang.reflect"; "org.junit.runner" -> "java.util"; "org.junit.runner" -> "java.util.concurrent"; "org.junit.runner" -> "java.util.concurrent.atomic"; "org.junit.runner" -> "java.util.regex"; "org.junit.runner" -> "junit.framework (junit-4.12.jar)"; "org.junit.runner" -> "junit.runner (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.internal.builders (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.internal.requests (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.internal.runners (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.runner.manipulation (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.runner" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.runner.manipulation" -> "java.lang"; "org.junit.runner.manipulation" -> "java.util"; "org.junit.runner.manipulation" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.runner.notification" -> "java.io"; "org.junit.runner.notification" -> "java.lang"; "org.junit.runner.notification" -> "java.lang.annotation"; "org.junit.runner.notification" -> "java.util"; "org.junit.runner.notification" -> "java.util.concurrent"; "org.junit.runner.notification" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.runners" -> "java.lang"; "org.junit.runners" -> "java.lang.annotation"; "org.junit.runners" -> "java.lang.reflect"; "org.junit.runners" -> "java.text"; "org.junit.runners" -> "java.util"; "org.junit.runners" -> "java.util.concurrent"; "org.junit.runners" -> "org.junit (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.internal.builders (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.internal.runners (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.internal.runners.model (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.internal.runners.rules (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.internal.runners.statements (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.rules (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.runner.manipulation (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.runners.parameterized (junit-4.12.jar)"; "org.junit.runners" -> "org.junit.validator (junit-4.12.jar)"; "org.junit.runners.model" -> "java.lang"; "org.junit.runners.model" -> "java.lang.annotation"; "org.junit.runners.model" -> "java.lang.reflect"; "org.junit.runners.model" -> "java.util"; "org.junit.runners.model" -> "java.util.concurrent"; "org.junit.runners.model" -> "org.junit (junit-4.12.jar)"; "org.junit.runners.model" -> "org.junit.internal (junit-4.12.jar)"; "org.junit.runners.model" -> "org.junit.internal.runners (junit-4.12.jar)"; "org.junit.runners.model" -> "org.junit.internal.runners.model (junit-4.12.jar)"; "org.junit.runners.model" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.runners.parameterized" -> "java.lang"; "org.junit.runners.parameterized" -> "java.lang.annotation"; "org.junit.runners.parameterized" -> "java.lang.reflect"; "org.junit.runners.parameterized" -> "java.util"; "org.junit.runners.parameterized" -> "org.junit.runner (junit-4.12.jar)"; "org.junit.runners.parameterized" -> "org.junit.runner.notification (junit-4.12.jar)"; "org.junit.runners.parameterized" -> "org.junit.runners (junit-4.12.jar)"; "org.junit.runners.parameterized" -> "org.junit.runners.model (junit-4.12.jar)"; "org.junit.validator" -> "java.lang"; "org.junit.validator" -> "java.lang.annotation"; "org.junit.validator" -> "java.util"; "org.junit.validator" -> "java.util.concurrent"; "org.junit.validator" -> "org.junit.runners.model (junit-4.12.jar)"; } |
Das wollen wir jetzt noch graphisch darstellen:
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1 |
fdp -T png -o junit-4.12.png junit-4.12.jar.dot |
Oder kurz:
|
1 |
fdp -T png -o summary.png summary.dot |
Das Ergebnis:
