IDEA图标含义

参考官方文档：https://www.jetbrains.com/help/idea/symbols.html#common-icons

自己常用的列在下面：

图标上有灰边边的是抽象的，比如抽象类、方法

 

Icon	Description
	Class
	Abstract class
	Groovy class
	Annotation
	Enumeration
	Exception
	Final Java class
	Interface
	Java class that contains declaration of the main() method.
	Test case
	Method
	Abstract method
	Field
	Variable（可能是基本数据类型或者引用数据类型）
	Property
	Parameter
	Element
Project structure
	Directory
	Module
	Group of modules
	Package
	Sources root
	Test root
	Excluded root
	Resources
	Test resources
	Generated sources root
	Generated test sources root
Visibility modifiers
	Read-only class, for example from a jar of an external library.
	private
	protected
	package protected
	static
	public