問題：

有時在開發(fā)中想直接寫一個java文件來測試一些東西，但是AndroidStudio執(zhí)行的時候會報錯。

代碼信息：

public class HelloWorld {

public static void main(String[] args) {

System.out.println("HelloWorld");

}

}

報錯信息

12:04:41: Executing task 'HelloWorld.main()'...

Executing tasks: [HelloWorld.main()] in project D:\AndroidStudioProjects\MyApplication8

> Configure project :app

WARNING: The following project options are deprecated and have been removed:

android.enableAapt2

This property has no effect, AAPT2 is now always used.

FAILURE: Build failed with an exception.

* Where:

Initialization script 'C:\Users\cj\AppData\Local\Temp\HelloWorld_main__.gradle' line: 20

* What went wrong:

A problem occurred configuring project ':app'.

> Could not create task ':app:HelloWorld.main()'.

> SourceSet with name 'main' not found.

* Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.

Use '--warning-mode all' to show the individual deprecation warnings.

See https://docs.gradle.org/5.6.4/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 116ms

12:04:41: Task execution finished 'HelloWorld.main()'.

解決方案

在.idea文件夾中找到gradle.xml， 打開文件，在標簽下添加

添加后文件內(nèi)容

結(jié)果

image.png

總結(jié)

再次運行就可以顯示執(zhí)行結(jié)果了，據(jù)說這句話的意思是不讓gradle接管構(gòu)建任務(wù)，防止當作gradle的task來執(zhí)行。

總結(jié)

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