Create a self-contained .jar file with Maven

If you want to create a self-contained .jar file, with all library dependencies included, you can do it with Maven. Include this in your pom.xml:

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.yourcompany.youapp.Main</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-jar-with-dependencies</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
	</plugins>
    </build>

Then when you run mvn package, you will get a target/*-jar-with-dependencies.jar file which you can run with java -jar.

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Running Jetty as a service in Ubuntu Linux

Jetty is a popular open source Java application server. In order to run it as a service on a Linux server, they recommend using a horribly overcomplicated and quite fragile script.

In Ubuntu server, there is a better way. Leverage Upstart and its declarative job definitions.

First install Jetty into /opt/jetty and create a jetty user:

useradd --user-group --shell /bin/false --home-dir /opt/jetty/temp jetty

Then create a file /etc/init/jetty.conf with content like this:

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