Java Maven Could not find or load main class










1















I've just started to learn Java but have issues almost at every step...
At least I want to make this super simple getting started tutorial work (from official Maven page) :)



I've done every step like in this tutorial and have built the project but can't run it.



So, after mvn package I have BUILD SUCCESSFUL but when I'am trying to launch jar file by this command java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App an error occurs:



Error: Could not find or load main class com.mycompany.app.App
Caused by: java.lang.ClassNotFoundException: com.mycompany.app.App


How to fix it?



java version "11.0.1" 2018-10-16 LTS



Apache Maven 3.6.0



mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false


Project structure is created automatically by this command as shown in the docs



my-app
|-src
| |-main
| |-java
| |-com
| |-mycompany
| |-app
| |-App.java
|-pom.xml
|-target


And the App.java code:



 package com.mycompany.app;

/**
* Hello world!
*
*/
public class App

public static void main( String args )

System.out.println( "Hello World!" );




And pom.xml file:



<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.app</groupId>
<artifactId>maven-test</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>maven-test</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>
</project>


Also I had to add these lines to make work mvn package command:



<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>









share|improve this question



















  • 1





    if you are just starting to learn java, start by learning java on it's own. add maven later

    – Stultuske
    Nov 14 '18 at 9:13











  • I suggest you to write your code and compile it via javac command. later on ,when you increase your mindset and knowledge,you start to use frameworks ,libaries like maven etc.

    – Türkmen Mustafa Demirci
    Nov 14 '18 at 9:35











  • @Stultuske, thanks, but it doesn't solve the problem. Furthermore I'am trying to repeat very simple example from official maven docs.

    – mr.boris
    Nov 14 '18 at 9:36











  • @mr.boris no, it might, however, avoid this kind of problems for you in the long run. this is like someone who just learned to walk after being paralyzed for his entire life saying: "I just tried to run 15 miles and my leg hurts". Sure, you can massage the leg, but unless you build up and start at the beginning, that leg 'll hurt the next time as well.

    – Stultuske
    Nov 14 '18 at 9:40











  • @Stultuske, thank you for mentoring, but I have experience in programming generally. So, if some minor error occurs then should be some simple solution for it. All in all this issue is not about multithreading or concurrency. In my opinion solution for such issues should be in the first lines of Google searching but it isn't (especially if related to official docs). So, it's first wake-up call to me for keep on going with Java.

    – mr.boris
    Nov 14 '18 at 9:59















1















I've just started to learn Java but have issues almost at every step...
At least I want to make this super simple getting started tutorial work (from official Maven page) :)



I've done every step like in this tutorial and have built the project but can't run it.



So, after mvn package I have BUILD SUCCESSFUL but when I'am trying to launch jar file by this command java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App an error occurs:



Error: Could not find or load main class com.mycompany.app.App
Caused by: java.lang.ClassNotFoundException: com.mycompany.app.App


How to fix it?



java version "11.0.1" 2018-10-16 LTS



Apache Maven 3.6.0



mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false


Project structure is created automatically by this command as shown in the docs



my-app
|-src
| |-main
| |-java
| |-com
| |-mycompany
| |-app
| |-App.java
|-pom.xml
|-target


And the App.java code:



 package com.mycompany.app;

/**
* Hello world!
*
*/
public class App

public static void main( String args )

System.out.println( "Hello World!" );




And pom.xml file:



<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.app</groupId>
<artifactId>maven-test</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>maven-test</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>
</project>


Also I had to add these lines to make work mvn package command:



<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>









share|improve this question



















  • 1





    if you are just starting to learn java, start by learning java on it's own. add maven later

    – Stultuske
    Nov 14 '18 at 9:13











  • I suggest you to write your code and compile it via javac command. later on ,when you increase your mindset and knowledge,you start to use frameworks ,libaries like maven etc.

    – Türkmen Mustafa Demirci
    Nov 14 '18 at 9:35











  • @Stultuske, thanks, but it doesn't solve the problem. Furthermore I'am trying to repeat very simple example from official maven docs.

    – mr.boris
    Nov 14 '18 at 9:36











  • @mr.boris no, it might, however, avoid this kind of problems for you in the long run. this is like someone who just learned to walk after being paralyzed for his entire life saying: "I just tried to run 15 miles and my leg hurts". Sure, you can massage the leg, but unless you build up and start at the beginning, that leg 'll hurt the next time as well.

    – Stultuske
    Nov 14 '18 at 9:40











  • @Stultuske, thank you for mentoring, but I have experience in programming generally. So, if some minor error occurs then should be some simple solution for it. All in all this issue is not about multithreading or concurrency. In my opinion solution for such issues should be in the first lines of Google searching but it isn't (especially if related to official docs). So, it's first wake-up call to me for keep on going with Java.

    – mr.boris
    Nov 14 '18 at 9:59













1












1








1








I've just started to learn Java but have issues almost at every step...
At least I want to make this super simple getting started tutorial work (from official Maven page) :)



I've done every step like in this tutorial and have built the project but can't run it.



So, after mvn package I have BUILD SUCCESSFUL but when I'am trying to launch jar file by this command java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App an error occurs:



Error: Could not find or load main class com.mycompany.app.App
Caused by: java.lang.ClassNotFoundException: com.mycompany.app.App


How to fix it?



java version "11.0.1" 2018-10-16 LTS



Apache Maven 3.6.0



mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false


Project structure is created automatically by this command as shown in the docs



my-app
|-src
| |-main
| |-java
| |-com
| |-mycompany
| |-app
| |-App.java
|-pom.xml
|-target


And the App.java code:



 package com.mycompany.app;

/**
* Hello world!
*
*/
public class App

public static void main( String args )

System.out.println( "Hello World!" );




And pom.xml file:



<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.app</groupId>
<artifactId>maven-test</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>maven-test</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>
</project>


Also I had to add these lines to make work mvn package command:



<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>









share|improve this question
















I've just started to learn Java but have issues almost at every step...
At least I want to make this super simple getting started tutorial work (from official Maven page) :)



I've done every step like in this tutorial and have built the project but can't run it.



So, after mvn package I have BUILD SUCCESSFUL but when I'am trying to launch jar file by this command java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App an error occurs:



Error: Could not find or load main class com.mycompany.app.App
Caused by: java.lang.ClassNotFoundException: com.mycompany.app.App


How to fix it?



java version "11.0.1" 2018-10-16 LTS



Apache Maven 3.6.0



mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false


Project structure is created automatically by this command as shown in the docs



my-app
|-src
| |-main
| |-java
| |-com
| |-mycompany
| |-app
| |-App.java
|-pom.xml
|-target


And the App.java code:



 package com.mycompany.app;

/**
* Hello world!
*
*/
public class App

public static void main( String args )

System.out.println( "Hello World!" );




And pom.xml file:



<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.app</groupId>
<artifactId>maven-test</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>maven-test</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>
</project>


Also I had to add these lines to make work mvn package command:



<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>






java maven






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 14 '18 at 10:15







mr.boris

















asked Nov 14 '18 at 9:12









mr.borismr.boris

448519




448519







  • 1





    if you are just starting to learn java, start by learning java on it's own. add maven later

    – Stultuske
    Nov 14 '18 at 9:13











  • I suggest you to write your code and compile it via javac command. later on ,when you increase your mindset and knowledge,you start to use frameworks ,libaries like maven etc.

    – Türkmen Mustafa Demirci
    Nov 14 '18 at 9:35











  • @Stultuske, thanks, but it doesn't solve the problem. Furthermore I'am trying to repeat very simple example from official maven docs.

    – mr.boris
    Nov 14 '18 at 9:36











  • @mr.boris no, it might, however, avoid this kind of problems for you in the long run. this is like someone who just learned to walk after being paralyzed for his entire life saying: "I just tried to run 15 miles and my leg hurts". Sure, you can massage the leg, but unless you build up and start at the beginning, that leg 'll hurt the next time as well.

    – Stultuske
    Nov 14 '18 at 9:40











  • @Stultuske, thank you for mentoring, but I have experience in programming generally. So, if some minor error occurs then should be some simple solution for it. All in all this issue is not about multithreading or concurrency. In my opinion solution for such issues should be in the first lines of Google searching but it isn't (especially if related to official docs). So, it's first wake-up call to me for keep on going with Java.

    – mr.boris
    Nov 14 '18 at 9:59












  • 1





    if you are just starting to learn java, start by learning java on it's own. add maven later

    – Stultuske
    Nov 14 '18 at 9:13











  • I suggest you to write your code and compile it via javac command. later on ,when you increase your mindset and knowledge,you start to use frameworks ,libaries like maven etc.

    – Türkmen Mustafa Demirci
    Nov 14 '18 at 9:35











  • @Stultuske, thanks, but it doesn't solve the problem. Furthermore I'am trying to repeat very simple example from official maven docs.

    – mr.boris
    Nov 14 '18 at 9:36











  • @mr.boris no, it might, however, avoid this kind of problems for you in the long run. this is like someone who just learned to walk after being paralyzed for his entire life saying: "I just tried to run 15 miles and my leg hurts". Sure, you can massage the leg, but unless you build up and start at the beginning, that leg 'll hurt the next time as well.

    – Stultuske
    Nov 14 '18 at 9:40











  • @Stultuske, thank you for mentoring, but I have experience in programming generally. So, if some minor error occurs then should be some simple solution for it. All in all this issue is not about multithreading or concurrency. In my opinion solution for such issues should be in the first lines of Google searching but it isn't (especially if related to official docs). So, it's first wake-up call to me for keep on going with Java.

    – mr.boris
    Nov 14 '18 at 9:59







1




1





if you are just starting to learn java, start by learning java on it's own. add maven later

– Stultuske
Nov 14 '18 at 9:13





if you are just starting to learn java, start by learning java on it's own. add maven later

– Stultuske
Nov 14 '18 at 9:13













I suggest you to write your code and compile it via javac command. later on ,when you increase your mindset and knowledge,you start to use frameworks ,libaries like maven etc.

– Türkmen Mustafa Demirci
Nov 14 '18 at 9:35





I suggest you to write your code and compile it via javac command. later on ,when you increase your mindset and knowledge,you start to use frameworks ,libaries like maven etc.

– Türkmen Mustafa Demirci
Nov 14 '18 at 9:35













@Stultuske, thanks, but it doesn't solve the problem. Furthermore I'am trying to repeat very simple example from official maven docs.

– mr.boris
Nov 14 '18 at 9:36





@Stultuske, thanks, but it doesn't solve the problem. Furthermore I'am trying to repeat very simple example from official maven docs.

– mr.boris
Nov 14 '18 at 9:36













@mr.boris no, it might, however, avoid this kind of problems for you in the long run. this is like someone who just learned to walk after being paralyzed for his entire life saying: "I just tried to run 15 miles and my leg hurts". Sure, you can massage the leg, but unless you build up and start at the beginning, that leg 'll hurt the next time as well.

– Stultuske
Nov 14 '18 at 9:40





@mr.boris no, it might, however, avoid this kind of problems for you in the long run. this is like someone who just learned to walk after being paralyzed for his entire life saying: "I just tried to run 15 miles and my leg hurts". Sure, you can massage the leg, but unless you build up and start at the beginning, that leg 'll hurt the next time as well.

– Stultuske
Nov 14 '18 at 9:40













@Stultuske, thank you for mentoring, but I have experience in programming generally. So, if some minor error occurs then should be some simple solution for it. All in all this issue is not about multithreading or concurrency. In my opinion solution for such issues should be in the first lines of Google searching but it isn't (especially if related to official docs). So, it's first wake-up call to me for keep on going with Java.

– mr.boris
Nov 14 '18 at 9:59





@Stultuske, thank you for mentoring, but I have experience in programming generally. So, if some minor error occurs then should be some simple solution for it. All in all this issue is not about multithreading or concurrency. In my opinion solution for such issues should be in the first lines of Google searching but it isn't (especially if related to official docs). So, it's first wake-up call to me for keep on going with Java.

– mr.boris
Nov 14 '18 at 9:59












2 Answers
2






active

oldest

votes


















1














You can re-try with this 4 commnds:



> mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
> cd my-app
> mvn package
> java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App


enter image description here






share|improve this answer























  • Thank you for testing this sample. As for me I have an error on mvn package step.. BUILD FAILURE Target option 1.5 is no longer supported. Use 1.6 or later.. At least for this step I have to add properties to the pom.xml file.

    – mr.boris
    Nov 14 '18 at 10:46











  • Now it's work. Thanks

    – mr.boris
    Nov 14 '18 at 10:54


















1














Based on your the output of the jar command, (the NoSuchFileException from the comments), it seems you were running the java command from some directory other than that of the maven project. @Sgrillon's answer works because he changes directory to that of my-app, runs the mvn package command and then the java command from the same directory. Then the target/my-app-1.0-SNAPSHOT.jar is there (generated by maven) and can be found by the java command to include it in its classpath (-cp)
This is not a java or maven problem but an issue with the file's path.



EDIT: I just realized on your pom.xml that your artifact was named maven-test



 <artifactId>maven-test</artifactId>


In this case, the jar would have been target/maven-test-1.0-SNAPSHOT.jar instead of my-app... and that's why neither java nor jar could find it.






share|improve this answer

























  • Thanks, everything works now after removing current project and repeat all steps again despite that fact that I had to modify properties in pom.xml file a little bit for the right Maven compiler versioning. Actually, I tried to run .jar file from the same directory (from the root of the project), so that I have no clue why that error occurred

    – mr.boris
    Nov 14 '18 at 12:48











  • @Mr.boris, see my edit on the answer, did you manually changed the artifactId on the pom.xml??

    – Chirlo
    Nov 14 '18 at 14:44










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2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














You can re-try with this 4 commnds:



> mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
> cd my-app
> mvn package
> java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App


enter image description here






share|improve this answer























  • Thank you for testing this sample. As for me I have an error on mvn package step.. BUILD FAILURE Target option 1.5 is no longer supported. Use 1.6 or later.. At least for this step I have to add properties to the pom.xml file.

    – mr.boris
    Nov 14 '18 at 10:46











  • Now it's work. Thanks

    – mr.boris
    Nov 14 '18 at 10:54















1














You can re-try with this 4 commnds:



> mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
> cd my-app
> mvn package
> java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App


enter image description here






share|improve this answer























  • Thank you for testing this sample. As for me I have an error on mvn package step.. BUILD FAILURE Target option 1.5 is no longer supported. Use 1.6 or later.. At least for this step I have to add properties to the pom.xml file.

    – mr.boris
    Nov 14 '18 at 10:46











  • Now it's work. Thanks

    – mr.boris
    Nov 14 '18 at 10:54













1












1








1







You can re-try with this 4 commnds:



> mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
> cd my-app
> mvn package
> java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App


enter image description here






share|improve this answer













You can re-try with this 4 commnds:



> mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
> cd my-app
> mvn package
> java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App


enter image description here







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 14 '18 at 10:36









sgrillonsgrillon

3,68312851




3,68312851












  • Thank you for testing this sample. As for me I have an error on mvn package step.. BUILD FAILURE Target option 1.5 is no longer supported. Use 1.6 or later.. At least for this step I have to add properties to the pom.xml file.

    – mr.boris
    Nov 14 '18 at 10:46











  • Now it's work. Thanks

    – mr.boris
    Nov 14 '18 at 10:54

















  • Thank you for testing this sample. As for me I have an error on mvn package step.. BUILD FAILURE Target option 1.5 is no longer supported. Use 1.6 or later.. At least for this step I have to add properties to the pom.xml file.

    – mr.boris
    Nov 14 '18 at 10:46











  • Now it's work. Thanks

    – mr.boris
    Nov 14 '18 at 10:54
















Thank you for testing this sample. As for me I have an error on mvn package step.. BUILD FAILURE Target option 1.5 is no longer supported. Use 1.6 or later.. At least for this step I have to add properties to the pom.xml file.

– mr.boris
Nov 14 '18 at 10:46





Thank you for testing this sample. As for me I have an error on mvn package step.. BUILD FAILURE Target option 1.5 is no longer supported. Use 1.6 or later.. At least for this step I have to add properties to the pom.xml file.

– mr.boris
Nov 14 '18 at 10:46













Now it's work. Thanks

– mr.boris
Nov 14 '18 at 10:54





Now it's work. Thanks

– mr.boris
Nov 14 '18 at 10:54













1














Based on your the output of the jar command, (the NoSuchFileException from the comments), it seems you were running the java command from some directory other than that of the maven project. @Sgrillon's answer works because he changes directory to that of my-app, runs the mvn package command and then the java command from the same directory. Then the target/my-app-1.0-SNAPSHOT.jar is there (generated by maven) and can be found by the java command to include it in its classpath (-cp)
This is not a java or maven problem but an issue with the file's path.



EDIT: I just realized on your pom.xml that your artifact was named maven-test



 <artifactId>maven-test</artifactId>


In this case, the jar would have been target/maven-test-1.0-SNAPSHOT.jar instead of my-app... and that's why neither java nor jar could find it.






share|improve this answer

























  • Thanks, everything works now after removing current project and repeat all steps again despite that fact that I had to modify properties in pom.xml file a little bit for the right Maven compiler versioning. Actually, I tried to run .jar file from the same directory (from the root of the project), so that I have no clue why that error occurred

    – mr.boris
    Nov 14 '18 at 12:48











  • @Mr.boris, see my edit on the answer, did you manually changed the artifactId on the pom.xml??

    – Chirlo
    Nov 14 '18 at 14:44















1














Based on your the output of the jar command, (the NoSuchFileException from the comments), it seems you were running the java command from some directory other than that of the maven project. @Sgrillon's answer works because he changes directory to that of my-app, runs the mvn package command and then the java command from the same directory. Then the target/my-app-1.0-SNAPSHOT.jar is there (generated by maven) and can be found by the java command to include it in its classpath (-cp)
This is not a java or maven problem but an issue with the file's path.



EDIT: I just realized on your pom.xml that your artifact was named maven-test



 <artifactId>maven-test</artifactId>


In this case, the jar would have been target/maven-test-1.0-SNAPSHOT.jar instead of my-app... and that's why neither java nor jar could find it.






share|improve this answer

























  • Thanks, everything works now after removing current project and repeat all steps again despite that fact that I had to modify properties in pom.xml file a little bit for the right Maven compiler versioning. Actually, I tried to run .jar file from the same directory (from the root of the project), so that I have no clue why that error occurred

    – mr.boris
    Nov 14 '18 at 12:48











  • @Mr.boris, see my edit on the answer, did you manually changed the artifactId on the pom.xml??

    – Chirlo
    Nov 14 '18 at 14:44













1












1








1







Based on your the output of the jar command, (the NoSuchFileException from the comments), it seems you were running the java command from some directory other than that of the maven project. @Sgrillon's answer works because he changes directory to that of my-app, runs the mvn package command and then the java command from the same directory. Then the target/my-app-1.0-SNAPSHOT.jar is there (generated by maven) and can be found by the java command to include it in its classpath (-cp)
This is not a java or maven problem but an issue with the file's path.



EDIT: I just realized on your pom.xml that your artifact was named maven-test



 <artifactId>maven-test</artifactId>


In this case, the jar would have been target/maven-test-1.0-SNAPSHOT.jar instead of my-app... and that's why neither java nor jar could find it.






share|improve this answer















Based on your the output of the jar command, (the NoSuchFileException from the comments), it seems you were running the java command from some directory other than that of the maven project. @Sgrillon's answer works because he changes directory to that of my-app, runs the mvn package command and then the java command from the same directory. Then the target/my-app-1.0-SNAPSHOT.jar is there (generated by maven) and can be found by the java command to include it in its classpath (-cp)
This is not a java or maven problem but an issue with the file's path.



EDIT: I just realized on your pom.xml that your artifact was named maven-test



 <artifactId>maven-test</artifactId>


In this case, the jar would have been target/maven-test-1.0-SNAPSHOT.jar instead of my-app... and that's why neither java nor jar could find it.







share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 14 '18 at 14:43

























answered Nov 14 '18 at 12:08









ChirloChirlo

4,57211937




4,57211937












  • Thanks, everything works now after removing current project and repeat all steps again despite that fact that I had to modify properties in pom.xml file a little bit for the right Maven compiler versioning. Actually, I tried to run .jar file from the same directory (from the root of the project), so that I have no clue why that error occurred

    – mr.boris
    Nov 14 '18 at 12:48











  • @Mr.boris, see my edit on the answer, did you manually changed the artifactId on the pom.xml??

    – Chirlo
    Nov 14 '18 at 14:44

















  • Thanks, everything works now after removing current project and repeat all steps again despite that fact that I had to modify properties in pom.xml file a little bit for the right Maven compiler versioning. Actually, I tried to run .jar file from the same directory (from the root of the project), so that I have no clue why that error occurred

    – mr.boris
    Nov 14 '18 at 12:48











  • @Mr.boris, see my edit on the answer, did you manually changed the artifactId on the pom.xml??

    – Chirlo
    Nov 14 '18 at 14:44
















Thanks, everything works now after removing current project and repeat all steps again despite that fact that I had to modify properties in pom.xml file a little bit for the right Maven compiler versioning. Actually, I tried to run .jar file from the same directory (from the root of the project), so that I have no clue why that error occurred

– mr.boris
Nov 14 '18 at 12:48





Thanks, everything works now after removing current project and repeat all steps again despite that fact that I had to modify properties in pom.xml file a little bit for the right Maven compiler versioning. Actually, I tried to run .jar file from the same directory (from the root of the project), so that I have no clue why that error occurred

– mr.boris
Nov 14 '18 at 12:48













@Mr.boris, see my edit on the answer, did you manually changed the artifactId on the pom.xml??

– Chirlo
Nov 14 '18 at 14:44





@Mr.boris, see my edit on the answer, did you manually changed the artifactId on the pom.xml??

– Chirlo
Nov 14 '18 at 14:44

















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