Hi, Your packages/directories are not correct:
That should work : H:\EclipseWorkspacesLunaForMaven\SimpleNoLibraryProject\target\classes> java main.java.org.prog.SimpleNoLibraryProgram Error: Could not find or load main class main.java..org.prog.SimpleNoLibraryProgram But "main/java" is not supposed to be part of the package name structure of your project should be - [projectDir]/src/main/java/org/prog/SimpleNoLibraryProgram - [projectDir]/pom.xml package of SimpleNoLibraryProgram.java is supposed to be only org.prog.SimpleNoLibraryProgram then you can run mvn package in project dir, and run "java org.prog.SimpleNoLibraryProgram" in [projectDir]/target/classes Note that invoking java on a maven project ike this is only doable for very simple projects without dependencies. On Mon, Aug 3, 2015 at 10:45 PM, <[email protected]> wrote: > I created the source code for a very simple Java program in Eclipse. > > Then I ran mvn install to build the program, which worked fine. > > The following are the errors I am getting when I try to run the program > built by Maven from the command line. I have included the command prompt > errors; the source code and the POM file. I have also searched extensively > for both of the execution time errors I am encountering but have been > unable to find any explanation that works, and I've tried several. > > Attempt(s) to execute the class file: > H:\EclipseWorkspacesLunaForMaven\SimpleNoLibraryProject\target\classes\main\java\org\prog>java > SimpleNoLibraryProgram > Error: Could not find or load main class SimpleNoLibraryProgram > > H:\EclipseWorkspacesLunaForMaven\SimpleNoLibraryProject\target\classes\main\java\org\prog>java > main.java..org.prog.SimpleNoLibraryProgram > Error: Could not find or load main class > main.java..org.prog.SimpleNoLibraryProgram > > > > Attempt to execute the JAR file: > C:\Users\Michael CTR > Tarullo.FAA\.m2\program-build-repository\main\java\org\prog\SimpleNoLibraryProgram\1.0> > no main manifest attribute, in SimpleNoLibraryProgram-1.0.jar > > > Source code: > package main.java.org.prog; > > public class SimpleNoLibraryProgram > { > public static void main(String[] args) > { > System.out.println("Hello Simple No > Library Program!!!"); > } > } > > > > POM 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/xsd/maven-4.0.0.xsd";> > <modelVersion>4.0.0</modelVersion> > > <groupId>main.java.org.prog</groupId> > <artifactId>SimpleNoLibraryProgram</artifactId> > <version>1.0</version> > <packaging>jar</packaging> > > <name>SimpleNoLibraryProgram</name> > <url>http://maven.apache.org</url> > > <properties> > <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> > </properties> > > <dependencies> > <dependency> > <groupId>junit</groupId> > <artifactId>junit</artifactId> > <version>3.8.1</version> > <scope>test</scope> > </dependency> > </dependencies> > </project> > > Michael Tarullo > Contractor (Engility Corp) > Enterprise Architect > NSRR System Administrator > FAA WJH Technical Center > (609)485-5294 > > -- Adrien Rivard
