Question

I am writing a console application with Java and gradle. I am using the application plugin and have the required fields correctly configured in build.gradle.

In my main class I have BufferedReader linked with System.in. Here’s the problem: When I run gradle run in project directory, the reader does not wait for my console input. BufferedReader#readLine instead returns null on the very first call. This behavior is not desirable for what am I doing.

What is the solution? Is there a separate console application plugin for gradle or do I need to tweak application plugin somehow to suit my needs?

Answer 1

By default, the system.in of your Gradle build is not wired up with the system.in of the run (JavaExec) task. You can do the following:

build.gradle (Groovy syntax):

run {
    standardInput = System.in
}

build.gradle.kts (Kotlin DSL syntax):

tasks.named<JavaExec>("run") {
    standardInput = System.`in`
}