How to list dependencies of a JAR

Question

is there a tool that can list third party "packages" that contain (third party) classes referenced in the JAR ? Let say that it would recognize what is "home" package from JAR file definition and it would print out a list of fully qualified names of third party classes up to 3rd level that were referenced within the JAR.

org.apache.commons  
org.apache.maven
javax.servlet.jsp
org.eclipse.persistence
org.apache.jackrabbit

the purpose is that I need to find maven dependencies for that JAR file and deploy it as a maven artifact.

Answer 1

This might be an alternative for this tool. But it doesn't list referenced classes. The last number determines "package level".

jar tvf yourjar.jar | perl -nle'BEGIN{$depth=(shift)-1}print join(".", (split(/\//, (split)[-1]))[0..$depth])' 3

Problem is, that this way it is impossible to get referenced classes out of class definitions. So the only way possible seems to be do it in JAVA.

So the question is: Is there any Java tool that can do it ?

EDIT:

I found what I needed : M2eclipse has a feature called Class search

In the maven repositories view, right click a repository and enable full index

Then Navigate > Open type from maven - there you can look through all artifacts available based on java package convention

Answer 2

There is a new tool since JDK 8: jdeps

https://wiki.openjdk.java.net/display/JDK8/Java+Dependency+Analysis+Tool

jdeps is a new command-line tool added since JDK 8 for developers to use to understand the static dependencies of their applications and libraries. jdeps is a static analysis tool on the given class files

Answer 3

If yours is a maven based project

mvn dependency:build-classpath -Dmdep.pathSeparator=":" -Dmdep.prefix='' -Dmdep.fileSeparator=":" -Dmdep.outputFile=classpath

Look at the below link http://maven.apache.org/plugins/maven-dependency-plugin/build-classpath-mojo.html

May be in your case

mvn dependency:build-classpath -Dmdep.pathSeparator=":" -Dmdep.prefix='' -Dmdep.fileSeparator=":" -Dmdep.outputFile=classpath -f pathtopom.xml of third party 

Answer 4

Tattleltale is a tool from JBoss which does this

tattletale.jboss.org/

Answer 5

JarAnalyzer:

a dependency management utility for jar files. It's primary purpose is to traverse through a directory, parse each of the jar files in that directory, and identify the dependencies between the jar files. The output is an xml file representing the PhysicalDependencies between the jar files.

For more information on PhysicalDependencies, including a variety of design patterns, check out Extensible Java...

Answer 6

If you use maven (as I understood), you can simply use Maven Dependency plugin.

First you need to write a basic pom.xml with all your jars, you can copy this example (i use hibernate as example), and substitute your jars :

    <?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <modelVersion>4.0.0</modelVersion>
       <groupId>com.mycompany.app</groupId>
       <artifactId>my-app</artifactId>
       <version>1.0-SNAPSHOT</version>
       <packaging>jar</packaging>
       <name>Maven Quick Start Archetype</name>
       <url>http://maven.apache.org</url>
       <dependencies>
          <dependency>
             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-core</artifactId>
             <version>3.5.0-Final</version>
          </dependency>
<!-- add here other dependencies -->
       </dependencies>
    </project>

then open terminal, go into the containing folder of the pom.xml above and run this command :

mvn dependency:tree

this will print a list of dependencies...

or if you want download and copy in a folder all dependencies run the following command :

mvn dependency:copy-dependencies

you'll find all your dependencies in folder ./target/dependencies