Create a simple Maven application in 5 mins | Create a fat Jar

Create a Quick Java Project with Maven 

Prerequisites :

1. Java version 6 + 
1. Check this with "java -version" command.
2. Maven - Maven is a java tool so have this installed after java is installed.
1. mvn --version

Creating a Project :

mvn archetype:generate -DgroupId=com.fileupload-DartifactId=upload-fileto-s3-DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

The pom file is the core of the project configuration in maven. It contains all necessary information to build the project.

Build the project :

mvn package - Mvn will compile and package the project into a jar file.

mvn clean install - this will clean the artifacts build by earlier builds.

To use  eclipse and make this project an eclipse project :

mvn eclipse:eclipse

Run the application from eclipse and you will see the following output.

Creating a fat jar :

Fat jar is a jar with all executables and dependencies.

You can use a plugin maven-shade-plugin plugin for this.

Specify the main class 

<mainClass>com.fileupload.App</mainClass>

Also, specify the name of your jar 

<finalName>uploadTos3</finalName>

Package it 

$ mvn package

Run the jar as below : 

java -jar target/uploadTos3.jar