Java eclipse中的源文件夹

我已经在Eclipse中将hadoop源代码作为Java项目导入，在Eclipse中，包名被视为文件夹。但当我尝试运行它时，它抛出“找不到主类”。如何更改结构或如何运行它？

您遵循了吗

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如果我像那样导入…我可以像普通java应用程序一样运行源代码吗

Importing projects to eclipse
When you import the project to eclipse, install hadoop-maven-plugins at first.

  $ cd hadoop-maven-plugins
  $ mvn install

Then, generate eclipse project files.

  $ mvn eclipse:eclipse -DskipTests

At last, import to eclipse by specifying the root directory of the project via
[File] > [Import] > [Existing Projects into Workspace].