Symbols Reference
File types
To view the list of file types recognized by IntelliJ IDEA, go to Settings/Preferences (Ctrl+Alt+S) . If a file in your project is marked with the 
icon, it indicates that IntelliJ IDEA can't recognize it. In this case, you can register and configure a new file type.
Common
| 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 |
 | Java class located out of the Sources root. Refer to the section Working with modules for details. |
 | Java class excluded from compilation. |
 | PHP trait |
 | PHP test |
 | Method |
 | Abstract method |
 | Field |
 | Variable |
 | Property |
 | Parameter |
 | Element |
 | Directory |
 | Module |
 | Group of modules |
 | Package |
 | Source root |
 | Test root |
 | Excluded root |
 | Resources |
 | Test resources |
 | Generated source roots |
 | Generated test source roots |
| Visibility modifiers | |
 | Read-only class, e.g. from a jar of an external library. |
 | private |
 | protected |
 | package protected |
 | static |
 | public |
Data Sources
| Icon | Description |
|---|---|
 | DB data source. Also, DBMS-specific icons are used: |
 | DB data source with the read-only status, e.g.  for Derby. |
 | DDL data source |
 | Database |
 | Schema |
 | Table |
 | View |
 | Column |
 | A NOT NULL column |
 | Column with a primary key |
 | Column with a foreign key |
 | Column with an index |
 | Primary key |
 | Foreign key |
 | Index |
 | Trigger |
 | Stored procedure or function |
Last modified: 4 April 2018