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a tutorial how to create a production-grade exe file from an existing Java project using the Spring Boot framework
updated 22 April 2022
To demonstrate, I'll use my very own project purely written in Java and if you are interested in the project itself, please refer to the original repo of this project.
This repo focuses on how to use the Spring Boot to create a production-grade executable jar file. Spring Boot is concerned with the infrastructure while you focus on writing your program. Take note, this is non-web GUI application. It's really that simple to build and run any of your existing Java program through Spring Boot. If I have to put web features or to connect to a server in this project, I can do that easily too in my code and Spring Boot will take care of the infrastructure.
First, there must be the maven plugin to create the executable jar file
in the pom.xml:
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
Second, you tell Spring Boot the main method of your program because it has its own main method.
<configuration>
<mainClass>xdvrx1ProjectSwing.MainMethod</mainClass>
</configuration>
And finally, when your program launches GUI, you must set
the headless mode in the SpringMainMethod file to false or else it
will throw a HeadlessException.
SpringApplicationBuilder builder =
new SpringApplicationBuilder(SpringMainMethod.class);
builder.headless(false);
ConfigurableApplicationContext context = builder.run(args);
What others are doing is relying on CommandLineRunner. This is needed
when you want to trap user inputs on the command line once the
Spring Boot is started and before your program runs. In our case here,
we don't need that.
If you have questions, please utilize
the Discussions feature of GitHub.
You can also create a pull request or raise an issue to start the discussion or query/ies.
Before you compile and build, make sure you are at the project directory
SpringBootProjectDir of this repo. Take note also, I'm using Maven build tool here.
In Windows,
to package your program as an executable jar file:
mvn clean package
to simply clean and compile:
mvn clean compile
to just clean your project:
mvn clean
to run the program:
mvn spring-boot:run
to build and run the program:
mvn clean install
MIT - the permissive license
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xkcph2017 /
a tutorial how to use the Spring Boot to create a production-grade executable jar file