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Questions tagged [serviceloader]

ServiceLoader is a Java SDK way to load different providers for a class from the classpath. It uses special configuration files in META-INF/services.

The full documentation is provided by Oracle at http://docs.oracle.com/javase/7/docs/api/java/util/ServiceLoader.html

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is Java ServiceLoader using the System Class Loader, or the Platform/Extension Class Loader?

Java JDK ServiceLoader as some complex information, and I have a hard time getting this one thing straight: Which class loader it uses. This question concerns the range of JDKs from JDK8 to JDK17. There are three static instantiation functions in…
foo
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java.util.ServiceLoader not able to load provider

I've been trying to resolve my problems for several days without success and need help. We've been upgrading our java version from 8 to 17 in our application (more than 20) and with only 2 of them we have met this error: Caused by:…
Giacomo Giovannini
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Testing ServiceLoader in Eclipse Plugins

I have four Eclipse plugin projects (create a new Java Project, right-click, configure, Convert to Plugin Project) in my workspace. The first (my.runtime) contains an interface (MyFactoryInterface) and a class (MyClient) that defines a method…
hd42
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how can i use jar of another project in my project at run-time in spring-boot without mentioning it to the pom.xml of my project

I want to create a project in spring boot in module pattern, there are four modules in my project moduleA, moduleB, moduleC and moduleD. moduleB contains the a interface. moduleC and moduleD contains the implementation of interface that is present…
hunter
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Use Koin instead of ServiceLoader for plugin discovery

I've so far used Java's ServiceLoader to discover implementations of interfaces my app provides at runtime in the classpath, i.e. a classic plugin approach. I'm now starting to use Koin in the app (for Dependency Injection) and wondering whether I…
sschuberth
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Javalin with JPMS and ServiceLoader results in NoClassDefFoundError: kotlin/NoWhenBranchMatchedException

Running Javalin with JPMS and ServiceLoader leads to a NoClassDefFoundError: kotlin/NoWhenBranchMatchedException. The same code following two other approaches works fine, though (see at the end of this post for details): No JPMS and ServiceLoader:…
baumgarb
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Service Loader Can't Find Provider

I am having trouble getting the service loader to find my providers. My set up is as follows: I have 4 modules: EntryPoint Library Version1 Version2 In Library, I have an interface defined: interface Parent{ fun doSomething() fun…
cershif
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How is activation happening in the Java SPI modules?

I am working on a task that migrates the OSGI modules to Java SPI modules. Let's say I have three OSGI(A, B, C) modules. So each module has a class for activation and activation happening when starting the servers(at the beginning). Service…
Shamly
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Java9 modules : How to execute Provider based on some priority of execution?

I am using java 9 modules to implement provider , i have multiple providers for service interface. I want to provide some priority for providers for their execution insted of using findFirst(); Optional…
Akhilesh Pandey
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ServiceLoader can't find my implementation

I'm trying to use ServiceLoader with modules system, the same way as shown in the Deploying service providers as modules header in the documentation here - click I have the following project: module tester.client package tester.client; import…
Wiktor
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Service loading: how to write plugins on Kotlin native?

In Java you are able to write plugins for your application with ServiceLoader. In this case you can define: interface A and class B implements A and simply in your code do the following: Create an external plugin with a configuration, where you…
Andrew Kuleshov
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ServiceLoader works different, when starting from JAR

We use external libraries for generating pdf-files with some specific content. As long as we run it as java program in the IDE, everything works as expected. But, when we build a jar with the maven-assembly-plugin, and then try to run this as a JAR…
Val Rafisa
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ServiceLoader with UrlClassLoader not finding service

I am trying to load plugins from a certain jar file using the java ServiceLoader with an UrlClassLoader, but I just cannot seem to get it to find my plugin classes. Building both modules works, but whenever I run the code below, I get a…
Jakob Tinhofer
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Loading ResourceBundle from named modules

Let's suppose that module A (provider) contains messages.properties and we want to load it as ResourceBundle from module B. Javadoc literally suggests the following approach. Provider module: module provider { exports provider; exports…
Evan
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How can I find all JDBC drivers available?

I have a library method that can be used to connect to a database and then build a document using data from the database. When they run this app with no parameters, I want to list out all available sql vendor connections. Based on this question I'm…
David Thielen
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