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Baeldung Pro comes with both absolutely No-Ads as well as finally with Dark Mode, for a clean learning experience:

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Once the early-adopter seats are all used, the price will go up and stay at $33/year.

Partner – Microsoft – NPI EA (cat = Baeldung)
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Azure Container Apps is a fully managed serverless container service that enables you to build and deploy modern, cloud-native Java applications and microservices at scale. It offers a simplified developer experience while providing the flexibility and portability of containers.

Of course, Azure Container Apps has really solid support for our ecosystem, from a number of build options, managed Java components, native metrics, dynamic logger, and quite a bit more.

To learn more about Java features on Azure Container Apps, visit the documentation page.

You can also ask questions and leave feedback on the Azure Container Apps GitHub page.

Partner – Microsoft – NPI EA (cat= Spring Boot)
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Azure Container Apps is a fully managed serverless container service that enables you to build and deploy modern, cloud-native Java applications and microservices at scale. It offers a simplified developer experience while providing the flexibility and portability of containers.

Of course, Azure Container Apps has really solid support for our ecosystem, from a number of build options, managed Java components, native metrics, dynamic logger, and quite a bit more.

To learn more about Java features on Azure Container Apps, you can get started over on the documentation page.

And, you can also ask questions and leave feedback on the Azure Container Apps GitHub page.

Partner – Orkes – NPI EA (cat=Spring)
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Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.

Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.

With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.

Try a 14-Day Free Trial of Orkes Conductor today.

Partner – Orkes – NPI EA (tag=Microservices)
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Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.

Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.

With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.

Try a 14-Day Free Trial of Orkes Conductor today.

eBook – Guide Spring Cloud – NPI EA (cat=Spring Cloud)
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eBook – Mockito – NPI EA (tag = Mockito)
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Mocking is an essential part of unit testing, and the Mockito library makes it easy to write clean and intuitive unit tests for your Java code.

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eBook – Java Concurrency – NPI EA (cat=Java Concurrency)
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Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.

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eBook – Reactive – NPI EA (cat=Reactive)
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Spring 5 added support for reactive programming with the Spring WebFlux module, which has been improved upon ever since. Get started with the Reactor project basics and reactive programming in Spring Boot:

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eBook – Java Streams – NPI EA (cat=Java Streams)
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Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.

But these can also be overused and fall into some common pitfalls.

To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:

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eBook – Jackson – NPI EA (cat=Jackson)
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Do JSON right with Jackson

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Get the most out of the Apache HTTP Client

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Building a REST API with Spring?

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Course – LS – NPI EA (cat=Jackson)
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Get started with Spring and Spring Boot, through the Learn Spring course:

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Explore Spring Boot 3 and Spring 6 in-depth through building a full REST API with the framework:

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Yes, Spring Security can be complex, from the more advanced functionality within the Core to the deep OAuth support in the framework.

I built the security material as two full courses - Core and OAuth, to get practical with these more complex scenarios. We explore when and how to use each feature and code through it on the backing project.

You can explore the course here:

>> Learn Spring Security

Course – All Access – NPI EA (cat= Spring)
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All Access is finally out, with all of my Spring courses. Learn JUnit is out as well, and Learn Maven is coming fast. And, of course, quite a bit more affordable. Finally.

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Course – LSD – NPI EA (tag=Spring Data JPA)
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Spring Data JPA is a great way to handle the complexity of JPA with the powerful simplicity of Spring Boot.

Get started with Spring Data JPA through the guided reference course:

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Partner – LambdaTest – NPI EA (cat=Testing)
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End-to-end testing is a very useful method to make sure that your application works as intended. This highlights issues in the overall functionality of the software, that the unit and integration test stages may miss.

Playwright is an easy-to-use, but powerful tool that automates end-to-end testing, and supports all modern browsers and platforms.

When coupled with LambdaTest (an AI-powered cloud-based test execution platform) it can be further scaled to run the Playwright scripts in parallel across 3000+ browser and device combinations:

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Course – Spring Sale 2025 – NPI EA (cat= Baeldung)
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Yes, we're now running our Spring Sale. All Courses are 25% off until 26th May, 2025:

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1. Overview

This article explores some options of running Spring Boot applications as a service.

Firstly, we are going to explain web applications’ packaging options and system services. In the subsequent sections, we explore different alternatives we have when setting up a service for both Linux as Windows based systems.

Finally, we will conclude with some references to additional sources of information.

2. Project Setup and Build Instructions

2.1. Packaging

Web applications are traditionally packaged as a Web Application aRchives (WAR) and deployed to a web server.

Spring Boot applications may be packaged both as WAR and JAR files. The latter embeds a web server within a JAR file, which allows you to run applications without the need of an installation and configuration of an application server.

2.2. Maven Configuration

Let’s start by defining the configuration of our pom.xml file:

<packaging>jar</packaging>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.0.RELEASE</version>
</parent>

<dependencies>
    ....
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <executable>true</executable>
            </configuration>
        </plugin>
    </plugins>
</build>

The packaging must be set to jar. We are using the latest stable version of Spring Boot at the time of writing, but any version after 1.3 will be enough. You can find more information about available versions here.

Notice that we have set the <executable> parameter to true for the spring-boot-maven-plugin artifact. This makes sure that a MANIFEST.MF file is added to the JAR package. This manifest contains a Main-Class entry that specifies which class defines the main method for your application.

2.3. Building Your Application

Run the following command inside your application’s root directory:

$ mvn clean package

The executable JAR file is now available in the target directory and we may start up the application by executing the following command on the command line:

$ java -jar your-app.jar

At this point, you still need to invoke the Java interpreter with the -jar option. There are many reasons why it would be preferable to have your app started by being able to invoke it as a service.

3. On Linux

In order to run a program as a background process, we could simply use the nohup Unix command, but this is not the preferred way either for various reasons. A good explanation is provided in this thread.

Instead, we are going to daemonize our process. Under Linux, we may choose to configure a daemon either with a traditional System V init script or with a Systemd configuration file. The former is traditionally the most well-known option but is gradually being replaced by the latter.

You may find more details on this difference here.

For enhanced security we first create a specific user to run the service with and change the executable JAR file permissions accordingly:

$ sudo useradd baeldung
$ sudo passwd baeldung
$ sudo chown baeldung:baeldung your-app.jar
$ sudo chmod 500 your-app.jar

3.1. System V Init

A Spring Boot executable JAR file makes the service setup process very easy:

$ sudo ln -s /path/to/your-app.jar /etc/init.d/your-app

The above command creates a symbolic link to your executable JAR file. You must use the full path to your executable JAR file, otherwise, the symbolic link will not work properly. This link enables you to start the application as a service:

$ sudo service your-app start

The script supports the standard service start, stop, restart and status commands. Moreover:

  • it starts the services running under the user baeldung we have just created
  • it tracks the application’s process ID in /var/run/your-app/your-app.pid
  • it writes console logs to /var/log/your-app.log, which you may want to check in case your application fails to start properly

3.2. Systemd

The systemd service setup is very simple as well. Firstly, we create a script named your-app.service using the following example and put it in /etc/systemd/system directory:

[Unit]
Description=A Spring Boot application
After=syslog.target

[Service]
User=baeldung
ExecStart=/path/to/your-app.jar SuccessExitStatus=143 

[Install] 
WantedBy=multi-user.target

Remember to modify Description, User and ExecStart fields to match your application. You should be able to execute the aforementioned standard service commands at this point as well.

As opposed to the System V init approach described in the previous section, the process ID file and console log file should be configured explicitly using appropriate fields in the service script. An exhaustive list of options may be found here.

3.3. Upstart

Upstart is an event-based service manager, a potential replacement for the System V init that offers more control on the behavior of the different daemons.

The site has good setup instructions that should work for almost any Linux distribution. When using Ubuntu you probably have it installed and configured already (check if there are any jobs with a name starting with “upstart” in /etc/init).

We create a job your-app.conf to start our Spring Boot application:

# Place in /home/{user}/.config/upstart

description "Some Spring Boot application"

respawn # attempt service restart if stops abruptly

exec java -jar /path/to/your-app.jar

Now run “start your-app” and your service will start.

Upstart offers many job configuration options, you can find most of them here.

4. On Windows

In this section, we present a couple of options that may be used to run a Java JAR as a Windows service.

4.1. Windows Service Wrapper

Due to difficulties with the GPL license of the Java Service Wrapper (see next subsection) in combination with e.g. the MIT license of Jenkins, the Windows Service Wrapper project, also known as winsw, was conceived.

Winsw provides programmatic means to install/uninstall/start/stop a service. In addition, it may be used to run any kind of executable as a service under Windows, whereas Java Service Wrapper, as implied by its name, only supports Java applications.

First, you download the binaries here. Next, the configuration file that defines our Windows service, MyApp.xml, should look like this:

<service>
    <id>MyApp</id>
    <name>MyApp</name>
    <description>This runs Spring Boot as a Service.</description>
    <env name="MYAPP_HOME" value="%BASE%"/>
    <executable>java</executable>
    <arguments>-Xmx256m -jar "%BASE%\MyApp.jar"</arguments>
    <logmode>rotate</logmode>
</service>

Finally, you have to rename the winsw.exe to MyApp.exe so that its name matches with the MyApp.xml configuration file. Thereafter you can install the service like so:

$ MyApp.exe install

Similarly, you may use uninstall, start, stop, etc.

4.2. Java Service Wrapper

In case you don’t mind the GPL licensing of the Java Service Wrapper project, this alternative may address your needs to configure your JAR file as a Windows service equally well. Basically, the Java Service Wrapper also requires you to specify in a configuration file which specifies how to run your process as a service under Windows.

This article explains in a very detailed way how to set up such an execution of a JAR file as a service under Windows, so we there’s no need to repeat the info.

5. Additional References

Spring Boot applications may also be started as Windows service using Procrun of the Apache Commons Daemon project. Procrun is a set of applications that allow Windows users to wrap Java applications as Windows services. Such a service may be set to start automatically when the machine boots and will continue to run without any user being logged on.

More details on starting Spring Boot applications under Unix may be found here. There are also detailed instructions on how to modify Systemd unit files for Redhat based systems. Finally

Finally, this quick howto describes how to incorporate a Bash script into your JAR file, so that it becomes an executable itself!

6. Conclusion

Services allow you to manage your application state very efficiently and, as we have seen, service setup for Spring Boot applications is now easier than ever.

Just remember to follow the important and simple security measures on user permissions to run your service.

Baeldung Pro – NPI EA (cat = Baeldung)
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Baeldung Pro comes with both absolutely No-Ads as well as finally with Dark Mode, for a clean learning experience:

>> Explore a clean Baeldung

Once the early-adopter seats are all used, the price will go up and stay at $33/year.

Partner – Microsoft – NPI EA (cat = Spring Boot)
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Azure Container Apps is a fully managed serverless container service that enables you to build and deploy modern, cloud-native Java applications and microservices at scale. It offers a simplified developer experience while providing the flexibility and portability of containers.

Of course, Azure Container Apps has really solid support for our ecosystem, from a number of build options, managed Java components, native metrics, dynamic logger, and quite a bit more.

To learn more about Java features on Azure Container Apps, visit the documentation page.

You can also ask questions and leave feedback on the Azure Container Apps GitHub page.

Partner – Orkes – NPI EA (cat = Spring)
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Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.

Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.

With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.

Try a 14-Day Free Trial of Orkes Conductor today.

Partner – Orkes – NPI EA (tag = Microservices)
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Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.

Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.

With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.

Try a 14-Day Free Trial of Orkes Conductor today.

eBook – HTTP Client – NPI EA (cat=HTTP Client-Side)
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The Apache HTTP Client is a very robust library, suitable for both simple and advanced use cases when testing HTTP endpoints. Check out our guide covering basic request and response handling, as well as security, cookies, timeouts, and more:

>> Download the eBook

eBook – Java Concurrency – NPI EA (cat=Java Concurrency)
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Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.

Get started with understanding multi-threaded applications with our Java Concurrency guide:

>> Download the eBook

eBook – Java Streams – NPI EA (cat=Java Streams)
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Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.

But these can also be overused and fall into some common pitfalls.

To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:

>> Join Pro and download the eBook

eBook – Persistence – NPI EA (cat=Persistence)
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Working on getting your persistence layer right with Spring?

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Course – LS – NPI EA (cat=REST)

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Get started with Spring Boot and with core Spring, through the Learn Spring course:

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Course – Spring Sale 2025 – NPI EA (cat= Baeldung)
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Yes, we're now running our Spring Sale. All Courses are 25% off until 26th May, 2025:

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Course – Spring Sale 2025 – NPI (All)
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Yes, we're now running our Spring Sale. All Courses are 25% off until 26th May, 2025:

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Partner – Microsoft – NPI (cat=Spring)
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Azure Container Apps is a fully managed serverless container service that enables you to build and deploy modern, cloud-native Java applications and microservices at scale. It offers a simplified developer experience while providing the flexibility and portability of containers.

Of course, Azure Container Apps has really solid support for our ecosystem, from a number of build options, managed Java components, native metrics, dynamic logger, and quite a bit more.

To learn more about Java features on Azure Container Apps, visit the documentation page.

You can also ask questions and leave feedback on the Azure Container Apps GitHub page.

eBook Jackson – NPI EA – 3 (cat = Jackson)