How to create Jar file from Maven project in eclipse

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I have a Maven project, but I am not familiar to Maven. I wanted to create an executable JAR file from this Maven project to use it in another project by eclipse. How can I do this?

Elba answered 31/7, 2015 at 9:10 Comment(1)

Follow this post: [#575094 [1]: #575094 – Coyotillo 31/7, 2015 at 9:14

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To build jar From Eclipse, Right click on your maven project name then

Run as > Maven install

Darcie answered 31/7, 2015 at 9:19 Comment(0)

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Right click maven project,

choose Run As-> Maven Build ....

Type package in the Goals box.

Click Run.

Tabescent answered 18/10, 2017 at 7:33 Comment(1)

Yes, this helped me actually. Earlier I was trying the arguments maven package and mvn package which didn't work to me. Tried just package and it created a jar under the folder target with all supported maven jars into it. – Vick 31/1, 2020 at 4:23

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Command line approach:

In the root of the project (the maven project), should be a pom.xml. Go to that root and run mvn package. If this is correct, there should be a new folder with the name target in the root of the project. Inside this folder there should be the jar file.

Blakeslee answered 31/7, 2015 at 9:33 Comment(1)

How do we 'run mvn package' here? :) – Quimby 24/11, 2022 at 9:59

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First of all, you have to remember about security in Java. Many jars would not work in fatjars, if they got included in other projects (for example bouncycastle).

If you are doing a simple executable jar that has no libs in it, and requires all of them on classpath, default build (when packageing tag is set to jar) would be ok, and just require a proper manifest.

If you need all libs inside (fatjar), you need to configure it yourself.

There are several plugins for it, for example maven-shade-plugin:

<plugin>
 <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.3</version>
            <configuration>
                <filters>
                    <filter>
                        <artifact>*:*</artifact>
                        <excludes>
                            <exclude>META-INF/*.SF</exclude>
                            <exclude>META-INF/*.RSA</exclude>
                            <exclude>META-INF/*.INF</exclude>
                        </excludes>
                    </filter>
                </filters>
                <transformers>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <manifestEntries>
                            <Main-Class>my.package.MainClass</Main-Class>
                            <Class-Path>.</Class-Path>
                        </manifestEntries>
                    </transformer>
                </transformers>
                <shadedArtifactAttached>true</shadedArtifactAttached>
                <shadedClassifierName>fat</shadedClassifierName>
            </configuration>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

Epilate answered 31/7, 2015 at 9:37 Comment(0)

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Add following into pom.xml file and Run as Maven Install. This worked for me.

pom.xml

<packaging>jar</packaging>

 <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>

<build>
    <plugins>

    <plugin>
        <artifactId>maven-assembly-plugin</artifactId>
        <configuration>
            <archive>
                <manifest>
                    <mainClass>com.pohan.App</mainClass>
                </manifest>
            </archive>
            <descriptorRefs>
                <descriptorRef>jar-with-dependencies</descriptorRef>
            </descriptorRefs>
        </configuration>
        <executions>
            <execution>
                <id>make-assembly</id>
                <phase>package</phase>
                <goals>
                    <goal>single</goal>
                </goals>
            </execution>
        </executions>
    </plugin>

    </plugins>


</build>

Now Run as Maven Install.

Pepys answered 6/4, 2019 at 7:53 Comment(0)

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if you want with the terminal to do it type

 mvn package

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