Use Maven without src/main/java

Question

Is there a way to use Maven to build Java projects without all the unnecessary directories?

https://spring.io/guides/gs/maven/

It looks like Maven expects

src/
  main/
     java/
        package1/
        package2/
        package3/
        packageX/

I would like to create a Maven project with a pom.xml file, that looks more like:

src/
  package1/
  package2/
  package3/
  packageX/

Is this possible?

Here is the pom.xml file I am using:

<?xml version="1.0" encoding="UTF-8"?>
<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>org.springframework</groupId>
   <artifactId>gs-maven</artifactId>
   <packaging>jar</packaging>
   <version>0.1.0</version>
   <build>
      <sourceDirectory>src</sourceDirectory>
      <plugins>
         <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <version>1.6.0</version>
            <executions>
               <execution>
                  <goals>
                     <goal>java</goal>
                  </goals>
               </execution>
            </executions>
            <configuration>
               <mainClass>hello.HelloWorld</mainClass>
               <arguments>
                  <argument>argument1</argument>
               </arguments>
               <systemProperties>
                  <systemProperty>
                     <key>myproperty</key>
                     <value>myvalue</value>
                  </systemProperty>
               </systemProperties>
            </configuration>
         </plugin>
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.1</version>
            <executions>
               <execution>
                  <phase>package</phase>
                  <goals>
                     <goal>shade</goal>
                  </goals>
                  <configuration>
                     <transformers>
                        <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                           <mainClass>hello.HelloWorld</mainClass>
                        </transformer>
                     </transformers>
                  </configuration>
               </execution>
            </executions>
         </plugin>
      </plugins>
   </build>
</project>

Answer 1

I suggest you follow the src/main/java structure because of the benefits (look here) it provide, but in case, if you have to change the folder structure for any other reasons to src (or any folder), then you can do that by specifying the sourceDirectory in your pom.xml as shown below:

<build>
    <sourceDirectory>src</sourceDirectory>
</build>