About not being able to create a new package under Src in idea

stay idea in , We will find that , Sometimes right click src unable new One package, This is because in our project at this time src Is not the root path of the project , Just set it as the root path , The specific method is as follows ：

At this point we find that we cannot new One package

It only needs ： Right click src→Mark Directory as→ Click on Sources Root

So you can do it src Now create the package .