How can I run Java JAR created from Intellij from command line

Question

I read this SO post and followed the steps but still I am unable to run it.

I tried running it as follows

Directory_where_jar_is_located $ java -jar Main.java
Error: Unable to access jarfile IcerbergRun
Directory_where_jar_is_located$ java -jar ProjectName.jar 
Error: Could not find or load main class IcebergRun

What needs to be done after this? What are those dependencies? Also, I am sharing my pom.xml that has some bunch of libraries that are required for my project.

<?xml version="1.0" encoding="UTF-8"?>

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0

<groupId>SparkIceberg</groupId>
<artifactId>SparkTut</artifactId>
<version>1.0-SNAPSHOT</version>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <!--<logger name="org.apache.catalina.core" level="OFF" />-->
            </configuration>
        </plugin>
    </plugins>
</build>
<repositories>
    <repository>
        <id>jitpack.io</id>
        <url>https://jitpack.io</url>
    </repository>
</repositories>


<dependencies>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_2.11</artifactId>
        <version>2.3.2</version>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-sql_2.11</artifactId>
        <version>2.3.2</version>
    </dependency>
    <dependency>
        <groupId>com.amazonaws</groupId>
        <artifactId>aws-java-sdk</artifactId>
        <version>1.11.417</version>
    </dependency>
    <dependency>
        <groupId>com.github.Netflix.iceberg</groupId>
        <artifactId>iceberg-spark</artifactId>
        <version>0.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.github.Netflix.iceberg</groupId>
        <artifactId>iceberg-data</artifactId>
        <version>0.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.github.Netflix.iceberg</groupId>
        <artifactId>iceberg-common</artifactId>
        <version>0.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.github.Netflix.iceberg</groupId>
        <artifactId>iceberg-api</artifactId>
        <version>0.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.github.Netflix.iceberg</groupId>
        <artifactId>iceberg-core</artifactId>
        <version>0.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.github.Netflix.iceberg</groupId>
        <artifactId>iceberg-parquet</artifactId>
        <version>0.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.github.Netflix.iceberg</groupId>
        <artifactId>iceberg-orc</artifactId>
        <version>0.3.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-aws</artifactId>
        <version>3.1.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-hdfs</artifactId>
        <version>3.1.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-common</artifactId>
        <version>3.1.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.parquet</groupId>
        <artifactId>parquet-common</artifactId>
        <version>1.10.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.parquet</groupId>
        <artifactId>parquet-column</artifactId>
        <version>1.10.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.parquet</groupId>
        <artifactId>parquet-hadoop</artifactId>
        <version>1.10.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.avro</groupId>
        <artifactId>avro</artifactId>
        <version>1.8.2</version>
    </dependency>
</dependencies>

See https://stackoverflow.com/a/42200519/104891. If it doesn't help, please share the [Minimal, Complete, and Verifiable example](https://stackoverflow.com/help/mcve). — CrazyCoder, Oct 01 '18 at 19:31
It's usually `Directory_where_jar_is_located $ java -jar jar_file_name.jar` — lealceldeiro, Oct 01 '18 at 19:56
@CrazyCoder I tried the above question but I did not understand some stuff. As requested, I added some more info by editing my question. Please let me know further. — Atihska, Oct 01 '18 at 21:12
@Atihska it looks like you have this problem: https://stackoverflow.com/a/45169655/104891, https://stackoverflow.com/a/50303815/104891. — CrazyCoder, Oct 01 '18 at 21:14
@CrazyCoder: How do you see what's inside JAR? I tried default Jar utility that gets in Mac with Java installation that didn't work. Also, I am not sure if my dependencies are being build inside JAR. How do you make sure about some external dependencies. — Atihska, Oct 01 '18 at 21:23
@Atihska jar is basically a ZIP, so you can use any archive manager to browse inside, or just unpack it to see. — CrazyCoder, Oct 01 '18 at 21:24
@CrazyCoder Tried that too but on uncompressing I am getting `SparkTut.zip.cpgz` created. Tried on terminal using unzip and its unzipping. — Atihska, Oct 01 '18 at 21:27
@Atihska https://askubuntu.com/questions/239407/using-terminal-to-open-a-file-within-a-jar-file — CrazyCoder, Oct 01 '18 at 22:22
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/181113/discussion-between-atihska-and-crazycoder). — Atihska, Oct 01 '18 at 22:29

score 0 · Answer 1 · answered Oct 01 '18 at 20:10

0

I created a Test project in java and built and executed the jar.

Initially the structure of project looked as shown below. The out directory contains only production directory.

Now click on File-> Project Structure->Artifacts. Click on + sign next to left navigation pane in the upper left corner.

Now click on + sign and select Jar->from module with dependencies.... A dialog box will appear as shown below:

Now select the Main Class and select the radio button in front of extract to the target JAR and click OK. You will see the following :

Check the Include in project build checkbox and click Apply->Ok.

Click on Build->Build Project. Now you can see that out directory has artifacts sub-directory which will have corresponding jar

Now on the terminal in intelliJ go inside directory where jar is present and execute the command java -jar JAR_NAME.jar and you can see that main function is executed.

answered Oct 01 '18 at 20:10

Yug Singh

3,112
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Still unable to run it. I get `Error: Could not find or load main class IcebergRun` – Atihska Oct 01 '18 at 20:54
Did you mention your main class in dialog box appear after clicking on `+` sign? Also please check do you have a class with `main function`? – Yug Singh Oct 01 '18 at 21:00
@Atihska I build a jar without having main function inside any class. When i execute the jar I get the error `Error: Could not find or load main class `. – Yug Singh Oct 01 '18 at 21:07
Yes I have a class with. main function and I specified my main after clicking `+`. Please check my edits. – Atihska Oct 01 '18 at 21:09
@Atihska look into solutions shared in https://stackoverflow.com/q/10654120/6407858 – Yug Singh Oct 01 '18 at 21:24
Not able to make it work still. I checked that my Main class exists. Using `$ jar tf IcebergJava.jar | grep Main`, I get `com/example/Main.class`. But still getting could not find or load main class com.example.Main. This means its reading the manifest file. – Atihska Oct 02 '18 at 18:37

score 0 · Accepted Answer · answered Oct 03 '18 at 21:17

So I am not sure why my IntelliJ produced JAR was unable to execute and getting Could not load main class so I tried my entire java project on command line and generated the JAR that worked for me.

Here are the steps:

1. Install maven on ec2 https://gist.github.com/sebsto/19b99f1fa1f32cae5d00

$sudo wget http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo
$sudo sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo
$sudo yum install -y apache-maven
$mvn —version

2. Install the following as well

$sudo yum install java-1.8.0-openjdk-devel
$yum install zip

3. Do this to create maven project http://www.mkyong.com/maven/how-to-create-a-java-project-with-maven/

$mvn archetype:generate -DgroupId=com.package.name -DartifactId=java-project -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

4. Edit code files and pom.xml. You can open the project in IntelliJ and edit.

5. MAVEN BUILD: Run from root dir of your java project

java-project$mvn package or mvn clean package

6. Remove these files created after build

https://gist.github.com/hkhamm/88923412992d284580ea

java-project$zip -d target/iceberg-project-1.0-SNAPSHOT.jar META-INF/*.RSA META-INF/*.DSA META-INF/*.SF

7. Run JAR

java-project$java -cp target/java-project-1.0-SNAPSHOT.jar com.project.name.App

How can I run Java JAR created from Intellij from command line

2 Answers2