21:21:57: Executing task 'HelloWorld.main()'...
Executing tasks: [HelloWorld.main()] in project C:\Users\Administrator\AndroidStudioProjects\Demo2
FAILURE: Build failed with an exception.
* Where:
Initialization script 'C:\Users\Administrator\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 308ms
21:21:57: Task execution finished 'HelloWorld.main()'.
uj5u.com熱心網友回復：
是不是你沒有在組態檔中注冊class？uj5u.com熱心網友回復：
你的是java工程 還是android工程java的話 提示你缺少main方法
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