Gradle pass property to task. Custom actionable tasks can be created by extending the DefaultTask class and defining inputs, outputs, and actions. properties file Gradle properties, system properties, and project properties can be found in the gradle. I have managed to make it work but I do not like the way I have to pass the parameters in command line. This blog post demystifies why this happens and provides step-by-step solutions to pass system properties to Java tests in Gradle. Due to a Gradle bug any Gradle property change will invalidate configuration cache, even if that value is not used / read during configuration. The gradle. If we have tasks in our projects that need to execute a Java application we can use the JavaExec task. Gradle includes many built-in task types, such as Copy, Jar, and Test, and you can also define your own. properties files as follows CommonUrl="put your url here or may be empty" and pass a command to from command line as follows gradle assembleRelease -Pcommanurl=put your URL here Learn how to pass system properties and command-line arguments to Java applications using Gradle with detailed examples and solutions. properties only, but leave the wrapper itself in gradle-wrapper. When I attempt to execute this task by executing the command . Gradle is of course a great build tool for Java related projects. This blog will guide you through **exactly how to pass system properties and command-line arguments when running Java classes with Gradle**, with clear examples and comparisons to Maven’s In Gradle, task properties and parameters allow you to configure and customize tasks in your build scripts. For example your task copyFlavor1 can be written as follows. I want to pass a variable from one task to another, in the same build. How do I access the value of an argument from the command line in a gradle task? I know that this can be done by -P but I have the same property in my properties file and gradle picks the argument Now if we want to define the system properties from the command-line when we run Gradle we must pass along the properties to the task. What happens when you use gradle -Dcassandra. // build. jar untouched. > Could not set unknown property 'username' for task ':listRepos' of type com. Note that running the wrapper task once will update gradle-wrapper. Checking for project properties If the task you want to pass parameters to is of type JavaExec and you are using Gradle 5, for example the application plugin's run task, then you can pass your parameters through the --args= command line option. ListReposTask. properties to the systemProperties property. They provide a way to pass values to tasks and influence their behavior. Q. These tasks have actions. /gradlew buildDocker -Pgcpproject=my-cool-project, I receive the following error: Invoking task from another task is deprecated. Task B needs that Information (in its execution phase) What I want to share, is a custom class with some properties in it, like this: class GitInfo { boolean isWorkingCopyClean String commitHash String repoUrl } as for now, I’m Dec 12, 2025 · Conclusion Passing parameters to Gradle tasks transforms rigid build scripts into flexible, reusable tools. What are command line arguments in Gradle? A. You can pass properties using the `-P` flag followed by the property name and value (e. It would be good to find out how you will pass a property from command prompt to a execution closure (TaskAction) so it will only be evaluated when you specifially execute that task. This leads to the bar property being null when the task tries to construct the input file I'm new to Gradle and having issues passing a property to a command line task. Expert guide with examples and common mistakes. By combining task properties, command-line overrides, and extensions, you can adapt tasks to different environments, projects, and workflows—all without rewriting your build. gradle task prep… I have a gradle task which calls a script and passed the command line arguments to the script using -PARGS. properties to avoid needing to be typed. There are many tasks that come with gradle which use parameters. So you'll have to pass properties explicitely. For example: Task A gathers Information in its execution phase. gradle line:18 which if where my run{ } is. However, it appears that the task @TaskAction method (and possibly the @InputFile-annotated fields?) is running before the plugin’s apply method. How to pass Java system properties from the command-line to a Java process in a Gradle build file using Grails 3. Nov 27, 2025 · When we want to pass input arguments from the Gradle CLI, we have two choices: setting system properties with the -D flag setting project properties with the -P flag In general, we should use project properties unless we want to customize settings in the JVM. However, a common frustration arises when trying to pass command-line arguments to your app—for example, running `gradle run -h` to trigger your Actionable tasks describe work in Gradle. gradle files which are linked together by root build. As with the Maven exec-maven-plugin, they should be passed in on the command line via yet another system property, as a space-delimited list that then needs to be split() before setting args, which accepts List objects. How do I pass spring. suite=SlowTests). task TaskA ( ) { doLast() { println "The value of myValue = " + myValue } } task TaskB () { def myValue myValue = project. example. args="arg1 arg2 arg3" I get "build failed with an exception" Where:path\build. Mar 7, 2023 · Hi there, I’m having a bunch of custom tasks and have to provide the calculated data between them. Nobody forces you to hardcode their value in the build, though. properties file: Then, when run in Eclipse, I execute Gradle using an specific aggregated task which invokes several others for a dev build, including compileJava. args="arg1 arg2 arg3" If I leave out the -Dexec. This guide outlines the steps you need to follow to pass such arguments effectively. task foo << { dependsOn 'beforeFoo' } Than I started to feel that my beforeFoo should get some information which is visible for foo and isn't for beforeFoo and I need to pass it somehow. api. 1. If I don't need to execute a task why should I be required to to pass (or to default if for this matter) a property that will only make sense in certain scenarios. How can I pass properties to gradle custom task? In ant It will look like this: public class MyCustomTask extends Task { private String name; private String version; @Override pu Q. Therefore we must reconfigure a JavaExec task and assign System. gz" baseN… I am developing a plugin that contains a single custom task. I run a task from command line via : gradle tasks. My first gradle task pulls the last commit message, and I need this message passed to another task. gradle. . Let’s start with a simple custom task that prints a message: Caution: Avoid using this one for values that frequently. When we need to pass Java system properties to the Java application we can set the systemProperties property of the JavaExec task. g. The Gradle `run` task (provided by the Application plugin) is a convenient way to launch your Java application directly from the command line. This allows you to invoke your application with the necessary parameters when running the task from the command line. active system property to the bootRun plugin's task? What has alre Learn how to pass multiple parameters in the command line when executing a Gradle task, including examples and common mistakes. These are: programName ( string | -f filename | -d key | -h) Options: This scope includes a lot of different properties, among them so-called extra properties (coming from the gradle. properties files). The task looks for a command-line argument, say bar, and uses it to construct an input file name. However, Gradle provides a task type for this functionality called WriteProperties. profiles. Groovy build. 11 IntelliJ version 2025. See the Configuring build environment guide for details. So I have a few tasks that do essentially the same thing but with different values, e. As a Java developer, you’ve likely used Gradle to automate builds, run tests, and execute applications. Use task dependsOn or mustRunAfter or finalizedBy methods, instead. Command line arguments in Gradle are parameters passed to the Gradle build system to influence its behavior and configuration at run time. This is usually fine as new versions of Gradle can be run even with older wrapper files. var string = "" task1 { string = someCalculation() } //now that I have stored value from task1, I want to use it in If your project requires access to a remote service during the build process, you can pass the necessary credentials through system properties. But the JavaExec task in gradle source code uses Property<String> for the mainClass task property (https://g… If you need to use project properties you can specify it as a system property in gradle. Since this tasks takes a long time, I implemented a flag so that it is not run during normal build, but needs to be enabled via a property: It makes sense to pass in the command line arguments for run but I have to pass them in for every task for example: gradle tasks -Dexec. The Jar and Zip tasks zip files into archives. TaskB. , `gradle build -PmyProp=myValue`). gradle test --tests *Test gradle dependencyInsight --dependency junit How can I access parameters in my own custom tasks? I have a Java application that runs with a custom gradle task and the application requires some arguments upon being invoked. ip=192. Hello Gradle community! My question is exactly as this one Passing variables from one task to another - #3 by Joe_Singray I have read through it and through documentation link given in that topic but unfortunately I am unable to come up with a solution so I am in need of help. properties file to gradle (on the command line: -Pproperties=my. task taskAll(type: Exec, dependsOn: taskinit) { environment['PROJECT_ROOT'] = "${ I'm using Gradle spring-boot plugin and I need to select a spring active profile for the test run. 8. Using Task Options If your argument is specific to a single task, you can use @Option annotation on in input to your task. 3. In other words, I’m trying to work with Gradle tasks as with methods where a method can have a return value of an Object, and a calling method can then get hold of that return value. plugins. How can I pass parameters to t Your method gives me Could not find method leftShift() for arguments [build_3vobal41blt05kb5pvio1jbbm$_run_closure12@33fabf91] on task ':tmpTask' of type org. dependsOn forces Gradle to assume that every file produced by a prerequisite task is needed by this task. It’s like a blueprint or class. In Gradle core, the compileJava task compiles the Java source code. I was facing a situation where I needed to call one Gradle build script from my current build script. Although it is possible to hijack system properties to pass our inputs, we should avoid doing this. execute(). 13? Anyway, the test task forks one or several new JVMs. DefaultTask I've got a java and groovy classes that are being run by gradle task. GZIP from "foobar" into "newfoobar" extension = "tar. For example, I have the following two tasks, taskA and taskB. properties, you could pass through the -D (jvm params) options, or you could pass through the -P option (project properties). I have a gradle task which runs some code checks, which is usually executed during build. In Gradle, you can pass properties to a build script in many different ways. The other issue was understanding how to pass command-line args; these are via the args property on the task or plugin. When defining a task in project A, how can I get a property of a task in project B? I can depend on a task from project B using dependsOn gradle. Execution failed for task ':listRepos'. gradle file. If your task is of type JavaExec you can use --args switch and pass it in Arguments text field of the Gradle Task Run Configuration togenther with the task name like swapSolution -args="-student=MyStudent -exercise Accelerate developer productivity. 2. 168. gradle TaskA -Pparam1=value1 -Pparam2=value2 TaskA calls TaskB via : tasks. Hello I have a feature request: in the Test task, provide a convenient way to specify system properties that should be passed on to the actual JVM running the tests (if the system property is actually set). I want to be pass “myValue” defined in taskB to taskA. Tasks defined in separated . 1 Operating System Windows x64 Target platform Fabric Description of the bug When i use the IDEA plugin create a kotlin fabric mod and load gradle project, How should I check for the existence of the project property called "system"? Is there a different way for testing for a project property as opposed to a system property? How would you pass a system property from the command line? This is from, the gradle documentation and I believe I am reading it right 19. Learn how to effectively pass configuration settings to Gradle tasks using Gradle extensions. In Gradle, you can pass command-line arguments to your Java application using the `args` property in your custom task. getPropert(“myProp”) + “test” // this just a simple Passing command line arguments to Gradle test tasks enables you to customize test execution based on specific parameters. For example gradle run --args='foo --bar=true' . Gradle helps teams build, automate and deliver better software, faster. 33. task copyFlavor1(dependsOn: 'copyFlavorGoogleServicesJson') To pass parameter is achieved by passing it from property by command parameter Using dependsOn to link tasks is a much coarser-grained mechanism that does not allow Gradle to understand why a task requires a prerequisite task to run, or which specific files from a prerequisite task are needed. This makes it easier for a developer to run the exact suite (gradle slowTests) vs running a “generic” task and parameterizing it with system properties ( gradle test -Dtest. By the end, you’ll understand how to fix the "null system property" problem and ensure your tests access the values they need. What I've already tried: 1 I want to pass a . gradle: task deployToServer { doLast { When a task has been previously executed, and the only changes since that execution are to incremental input file properties, Gradle can intelligently determine which input files need to be processed, a concept known as incremental execution. How do I pass properties in Gradle? A. gradle by apply from expression. Here's a step-by-step guide: Task Types A task type defines what kind of work a task can do. Minecraft Development for IntelliJ plugin version 1. and give a parameter in gradle. By default, a task is of type DefaultTask . tasks. Even if that did work, I can’t help but feel that it’s a bit of a questionable approach to use the system properties for passing credentials between different JVMs though… Many command-line flags can be specified in gradle. To pass the data from one task to another, I use the project extensions. You could pass it via gradle. If the task you want to pass parameters to is of type JavaExec and you are using Gradle 5, for example the application plugin's run task, then you can pass your parameters through the --args= command line option. Passing Arguments to Tasks To pass arguments to specific Gradle tasks, you can define task properties that accept command-line input. In the following simplified project, I have one task that prepares some data and another task that consumes this data. task('T') but the return type there is TaskReference and there does not seem to be a way to get a property of T. Can I skip certain tasks when running I would appreciate any hint as how to pass something defined in one task to another task. properties) and have a gradle task read it and make those properties available to all tasks (and other config / closure sections), Is this possible? Hi, I’m trying to store results in a set of properties or an object from the execution of one Gradle task so I can then pass these results into another task. When running outside Eclipse, a different set of tasks is invoked surrounding compileJava. , task tarArtifact (type: Tar) { compression = Compression. includedBuild('ProjectB'). Here's a step-by-step guide: Nov 6, 2025 · Gradle offers flexible ways to achieve the same result, whether via built-in tasks like `run` (from the Application plugin) or custom `JavaExec` tasks. Just specify the target file and define some properties: I have multiple tasks. For example: test { mappedSystemProperties= [‘foo’, ‘bar’] … } –> In this example, if the system properties foo and bar are set, they are passed on to the test JVM, otherwise The documentation for custom tasks just uses a private field and setter/getter combination for task properties. properties file in project root directory. 9wtn, tztdnv, tryyx, nlosz, ylzgq, wmioio, m88p, 99f5mr, 1zxq9, bmmh,