IDEA最全图标详解

Icon	Description
	Class:普通类
	Abstract class:抽象类
	Groovy class:Groovy是JVM平台上的一门脚本语言, 本身也支持OOP,也具有类这个概念. Groovy本身可以简化Java编程过程, Groovy的类也体现了这一点, 简化了传统Java类的构建过程, 使得构建更加简单.
	Annotation:注解类
	Enumeration:枚举
	Exception:异常
	Final Java class:最终类
	Interface:接口
	Java class that contains declaration of the main() method.:带有main方法的类
	Test case:测试类,带有@Test注解
	Java class located out of the Sources root:在 Sources root路径之外的java文件
	Java class excluded from compilation:不会被编译的类
	PHP trait:Trait 是为类似 PHP 的单继承语言而准备的一种代码复用机制。Trait 为了减少单继承语言的限制，使开发人员能够自由地在不同层次结构内独立的类中复用 method。Trait 和 Class 组合的语义定义了一种减少复杂性的方式，避免传统多继承和 Mixin 类相关典型问题。
	PHP test
	Method:方法
	Abstract method:静态方法
	Field:成员变量(字段)
	Variable:变量
	Property:
	Parameter:参数
	Element:元素
	Directory:普通文件夹
	Module:说明这是一个新的模块
	Group of modules:一个模块组,里面有许多java模块
	Package:包
	Sources root:源文件夹:通过将文件夹加入这种类别，来告诉IntelliJ IDEA，这个文件夹和它的子文件夹中包含源码，在构建工程时，需要作为一部分被编译进去。但是需要注意,有时我们的配置文件放在该路径下缺不能被编译,项目运行的时候会报:文件找不到的错误,此类文件我们可以放到Resources Root下面;
	Test[Sources] root:源文件夹,这个类型的文件夹也用来放置源码，不过是测试的源码（比如单元测）。test source文件夹可以帮助你将测试代码和产品代码分离开
	Excluded root: t the moment, you can increase the IDE performance. Normally, compilation output folders are marked as excluded. Apart from excluding the entire folders, you can also exclude specific files. 代码自动补全、导航和检查会忽略被排除的文件夹中的文件。这就是为什么在排除当前不需要的文件夹时，可以提高IDE性能的原因。通常，编译输出文件夹被标记为Excluded 。 除了排除整个文件夹之外，还可以排除特定文件。
	Resources Root: ​ 该类文件夹用于存放你的应用中需要用到的资源文件（如：图片、xml或者properties配置文件等）。 ​ 在构建过程中，resource文件夹中的内容均会按照原文件的样子被复制到输出文件夹。和source文件夹一样，你可以定制你的resource文件夹的结构。你也可以指定你的resource文件夹中的文件被拷贝到输出文件的那个文件夹中。 ​ PS：默认情况下，工程编译后，resource中的文件和文件夹会被放置在源码编译后的相同的文件夹中，所以如果在源码中以相对路径读取resource中的配置文件时，可认为src中的java文件夹和resource为同一个根目录。 Resource Files Resources include properties files, images, DTDs, and XML files. These files are located in the classpath of your application, and are usually loaded from the classpath using the following methods: ResourceBundle.getBundle() for properties files and resource bundles loadResourceAsStream() for icons and other files When building an application, IntelliJ IDEA copies all resources into the output directory, preserving the directory structure of the resources relative to the source path. The following file types are recognized as resources by default: .dtd .jpeg .properties .gif .jpg .tld .html .png .xml The pattern of recognized resource files can be configured as a regular expression in theCompiler dialog (Settings/Preferences Ctrl+Alt+S | Build, Execution, Deployment | Compiler). Using the Resource Patterns field, you can add your own file extensions and create custom list of resources.
	Test resources Root:用于存放测试源码中关联的资源文件。除此之外，和Resource Root没有区别。
	Generated sources root:The IDE considers that files in the Generated Sources root folder are generated automatically rather than written manually, and can be regenerated.IDE认为Generated sources root文件夹中的文件是自动生成的，而不是手动编写的，并且可以重新生成。
	Generated test sources root:同Generated sources root
Visibility modifiers
	Read-only class, for example from a jar of an external library.
	private
	protected
	package protected
	static
	public
Bookmarks
	Anonymous bookmark – a check sign bookmark. Bookmarks are used for quick navigation within a file or across the entire project.
	Lettered mnemonic bookmark – a letter in the interval from A to Z.
	Numbered mnemonic bookmark – a number in the interval from 0 to 9.

Breakpoint icons

•  inactive/dependent field watchpoint

•  inactive/dependent line breakpoint

•  inactive/dependent method breakpoint

•  disabled line breakpoint

•  disabled exception breakpoint

•  disabled field watchpoint

•  disabled method breakpoint

•  exception breakpoint

•  field watchpoint

•  invalid breakpoint

•  method breakpoint

•  muted line breakpoint

•  muted inactive/dependent field watchpoint

•  muted inactive/dependent line breakpoint

•  muted inactive/dependent method breakpoint

•  muted disabled line breakpoint

•  muted disabled field watchpoint

•  muted disabled method breakpoint

•  muted field watchpoint

•  muted method breakpoint

•  non-suspending line breakpoint

•  non-suspending field watchpoint

•  non-suspending method breakpoint

•  line breakpoint

•  verified line breakpoint

•  verified field watchpoint

•  verified method breakpoint

•  verified non-suspending line breakpoint

•  verified non-suspending field watchpoint

•  verified non-suspending method breakpoint

For more information about breakpoints, refer to Breakpoints.

Data Sources

Icon	Description
	Access Method
	Aggregate
	Alias Type
	Argument
	Body
	Check
	Cluster
	Collation
	Collection Type
	Column. For more information about column icon combinations, see Possible icon combinations for columns.
	Data File
	Database
	Read-only status
	DDL data source
	Default
	Exception
	Extension
	External Schema
	Foreign Data Wrapper
	Foreign Key
	Foreign Table
	Index
	Key
	Materialized Log
	Materialized View
	Object Attribute
	Object Type
	Operator
	Package
	Projection
	Read-only data sources
	Role
	Routine
	Rule
	Scheduled Event
	Schema
	Sequence
	Server
	Stored procedure or function
	Synonym
	Table
	Table Type
	Tablespace
	Trigger
	User
	User Mapping
	Variable
	View
	Virtual Table

https://www.jetbrains.com/help/idea/symbols.html#breakpoint-icons