Intellij idea of jetbrains is an apple in the Java programming field and has a good user experience.
Next we will introduce an idea function that can significantly improve the efficiency of writing code. -- Auto Import
The Auto Import function can help us automatically delete useless package import (not referenced) and automatically import and fill in unimported packages. It completely intelligently helps us to omit the import package operation during program development, greatly optimizing the development efficiency.
In addition, when you move a class to change its path, this function will change the path in the associated file accordingly.
It is an artifact.
The following describes how to set Auto Import.
Settings → editor → General → Auto Import
Select Add unambiguous imports on the fly and optimize imports on the fly.
Add unambiguous imports on the fly: Quickly add clear imports.
Optimize imports on the fly: Quickly optimizes the import. optimization means that it automatically helps Delete useless imports.
Idea function Auto Import: automatically optimizes the import package (automatically deletes and imports packages)