gradle: Skipping task ':compileJava' as it has no source files

问题

i try gradle -d compileJava in my try project, and gradle raise "Skipping task ':compileJava' as it has no source files.". the worse thing is that i can't see anything created in build/. i create this project only with running gradle init and creating a "src/Ex.java".

my question is:

How to load default "compileJava" or define my "compileJava" to fix this warning.

回答1:

By default, Java source files need to go into src/main/java (or src/test/java for test sources). Either adapt your directory structure accordingly, or reconfigure the source directory as follows:

sourceSets {
    main {
        java {
            srcDirs = ["src"]
        }
    }
}

回答2:

You can also change gradle version to 4.8 in

gradle-wrapper.properties 
distributionUrl=https\://services.gradle.org/distributions/gradle-4.8-bin.zip

then do:

./gradlew build

来源：https://stackoverflow.com/questions/26634000/gradle-skipping-task-compilejava-as-it-has-no-source-files