Code Style Kotlin
for Windows and Linux
Use this page to configure formatting options for Kotlin files. View the result in the Preview pane on the right.
Tabs and Indents
|Use tab character|| |
- If this checkbox is selected, tab characters are used:
- On pressing the Tab key
- For indentation
- For code reformatting
- When the checkbox is cleared, IntelliJ IDEA uses spaces instead of tabs.
|Smart tabs|| |
- If this checkbox is selected, the part of indentation defined by the nesting of code blocks, is made of the tabs and (if necessary) spaces, while the part of indentation defined by the alignment is made only of spaces.
- If this checkbox is cleared, only tabs are used. This means that a group of spaces that fits the specified tab size is automatically replaced with a tab, which may result in breaking fine alignment.
The Smart Tabs checkbox is available if the Use Tab Character checkbox is selected.
|Tab size||In this text box, specify the number of spaces included in a tab.|
|Indent||In this text box, specify the number of spaces (or tabs if the Use Tab Character checkbox is selected) to be inserted for each indent level. |
|Continuation indent||In this text box, specify the number of spaces (or tabs if the Use Tab Character checkbox is selected) to be inserted between the elements of an array, in expressions, method declarations and method calls.|
|Keep indents on empty lines||If this checkbox is selected, then IntelliJ IDEA will keep indents on the empty lines as if they contained some code.|
If this checkbox is not selected, IntelliJ IDEA will delete the tab characters and spaces.
Use this tab to specify where you want spaces in your code. To have IntelliJ IDEA automatically insert a space at a location, select the checkbox next to this location in the list. The results are displayed in the Preview pane.
Wrapping and braces
In this tab, customize the code style options, which IntelliJ IDEA will apply on reformatting the source code. The left-hand pane contains the list of exceptions (Keep when reformatting), and placement and alignment options for the various code constructs (lists, statements, operations, annotations, etc.) The right-hand pane shows preview.
Alignment takes precedence over indentation options.
Keep when reformatting
Use the checkboxes to configure exceptions that IntelliJ IDEA will make when reformatting the source code. For example, by default, the Line breaks checkbox is selected. If your code contains lines that are shorter than a standard convention, you can convert them by disabling the Line breaks checkbox before you reformat the source code.
The wrapping style applies to the various code constructs, specified in the left-hand pane (for example, method call arguments, or assignment statements).
|Wrapping style||From this drop-down list, select the desired wrapping style: |
|Align when multiline||If this checkbox is selected, a code construct starts at the same column on each next line. Otherwise, the position of a code construct is determined by the current indentation level. |
|Top-level Symbols||Use this area to define how the top-level symbols are imported. The possible options are: |
- Use single name import: if this option is selected, only a particular declaration from a package during code generation or import optimization is imported.
- Use import with '*': if this option is selected, a statement importing an entire package is inserted.
- Use import with '*' if at least <n> names used: if this option is selected, specify the number of declarations to be imported from a single package, until all the statements importing a single declaration are substituted with a statement importing an entire package.
|Java Statics and Enum Members||Use this area to define how Java statics and enums are imported. |
|Other||Use this area to define how the other symbols are imported. |
Insert imports for nested classes:
- If this checkbox is selected, IntelliJ IDEA creates imports for the nested classes referenced in your code.
- If this option is not selected, IntelliJ IDEA generates import for the top-level class and qualifies the name of the nested class with the name of its top-level class.
|Packages to Use Import with '*'||Use the table as follows: |
- Package: In the text fields of this column, specify the packages to be imported.
- With Subpackages: Select this checkbox to have IntelliJ IDEA import all the subpackages of the selected package.
Click this link to reveal the list of languages to be used as the base for the current language code style. So doing, only the settings that are applicable to the current language are taken. All the other settings are not affected.
This link appears in the upper-right corner of the language-specific code style page, when applicable.
Click Reset to discard changes and return to the initial set of code style settings.
Last modified: 11 October 2017
Language and Framework-Specific Guidelines: