# 17. Code Style Settings
> For the complete documentation index, see [llms.txt](https://plugins.jetbrains.com/docs/intellij/llms.txt).
> **TL;DR**
> Reference: [Code Style Settings](code-formatting.html#code-style-settings)
>
>
>
> Code: [SimpleCodeStyleSettings](https://github.com/JetBrains/intellij-sdk-code-samples/tree/main/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettings.java), [SimpleCodeStyleSettingsProvider](https://github.com/JetBrains/intellij-sdk-code-samples/tree/main/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettingsProvider.java), [SimpleLanguageCodeStyleSettingsProvider](https://github.com/JetBrains/intellij-sdk-code-samples/tree/main/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java)
> **Tip:**
> This page is part of multi-step [Custom Language Support Tutorial](custom-language-support-tutorial.html). All previous steps must be executed in sequence for the code to work.
Code style settings enable defining formatting options. A code style settings provider creates an instance of the settings and also creates an options page in Settings. This example creates a Settings page that uses the default language code style settings, customized by a language code style settings provider.
## Define Code Style Settings
Define [SimpleCodeStyleSettings](https://github.com/JetBrains/intellij-sdk-code-samples/tree/main/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettings.java) for Simple Language by subclassing [CustomCodeStyleSettings](https://github.com/JetBrains/intellij-community/tree/idea/263.7307.200/platform/code-style-api/src/com/intellij/psi/codeStyle/CustomCodeStyleSettings.java).
```JAVA
public class SimpleCodeStyleSettings extends CustomCodeStyleSettings {
public SimpleCodeStyleSettings(CodeStyleSettings settings) {
super("SimpleCodeStyleSettings", settings);
}
}
```
## Define Code Style Settings Provider
The code style settings provider gives the IntelliJ Platform a standard way to instantiate `CustomCodeStyleSettings` for the Simple Language.
Define [SimpleCodeStyleSettingsProvider](https://github.com/JetBrains/intellij-sdk-code-samples/tree/main/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettingsProvider.java) for Simple Language by subclassing [CodeStyleSettingsProvider](https://github.com/JetBrains/intellij-community/tree/idea/263.7307.200/platform/lang-api/src/com/intellij/psi/codeStyle/CodeStyleSettingsProvider.java).
```JAVA
final class SimpleCodeStyleSettingsProvider extends CodeStyleSettingsProvider {
@Override
public CustomCodeStyleSettings createCustomSettings(@NotNull CodeStyleSettings settings) {
return new SimpleCodeStyleSettings(settings);
}
@Override
public String getConfigurableDisplayName() {
return "Simple";
}
@NotNull
public CodeStyleConfigurable createConfigurable(@NotNull CodeStyleSettings settings,
@NotNull CodeStyleSettings modelSettings) {
return new CodeStyleAbstractConfigurable(settings, modelSettings, this.getConfigurableDisplayName()) {
@Override
protected @NotNull CodeStyleAbstractPanel createPanel(@NotNull CodeStyleSettings settings) {
return new SimpleCodeStyleMainPanel(getCurrentSettings(), settings);
}
};
}
private static class SimpleCodeStyleMainPanel extends TabbedLanguageCodeStylePanel {
public SimpleCodeStyleMainPanel(CodeStyleSettings currentSettings, CodeStyleSettings settings) {
super(SimpleLanguage.INSTANCE, currentSettings, settings);
}
}
}
```
## Register the Code Style Settings Provider
The `SimpleCodeStyleSettingsProvider` implementation is registered with the IntelliJ Platform in the plugin configuration file using the [com.intellij.codeStyleSettingsProvider](https://jb.gg/ipe?extensions=com.intellij.codeStyleSettingsProvider) extension point .
```XML
```
## Define the Language Code Style Settings Provider
Define [SimpleLanguageCodeStyleSettingsProvider](https://github.com/JetBrains/intellij-sdk-code-samples/tree/main/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java) for Simple Language by subclassing [LanguageCodeStyleSettingsProvider](https://github.com/JetBrains/intellij-community/tree/idea/263.7307.200/platform/lang-api/src/com/intellij/psi/codeStyle/LanguageCodeStyleSettingsProvider.java), which provides common code style settings for a specific language.
```JAVA
final class SimpleLanguageCodeStyleSettingsProvider extends LanguageCodeStyleSettingsProvider {
@NotNull
@Override
public Language getLanguage() {
return SimpleLanguage.INSTANCE;
}
@Override
public void customizeSettings(@NotNull CodeStyleSettingsCustomizable consumer, @NotNull SettingsType settingsType) {
if (settingsType == SettingsType.SPACING_SETTINGS) {
consumer.showStandardOptions("SPACE_AROUND_ASSIGNMENT_OPERATORS");
consumer.renameStandardOption("SPACE_AROUND_ASSIGNMENT_OPERATORS", "Separator");
} else if (settingsType == SettingsType.BLANK_LINES_SETTINGS) {
consumer.showStandardOptions("KEEP_BLANK_LINES_IN_CODE");
}
}
@Override
public String getCodeSample(@NotNull SettingsType settingsType) {
return """
# You are reading the ".properties" entry.
! The exclamation mark can also mark text as comments.
website = https://en.wikipedia.org/
language = English
# The backslash below tells the application to continue reading
# the value onto the next line.
message = Welcome to \\
Wikipedia!
# Add spaces to the key
key\\ with\\ spaces = This is the value that could be looked up with the key "key with spaces".
# Unicode
tab : \\u0009""";
}
}
```
## Register the Language Code Style Settings Provider
The ``SimpleLanguageCodeStyleSettingsProvider` implementation is registered with the IntelliJ Platform in the plugin configuration file using the [com.intellij.langCodeStyleSettingsProvider](https://jb.gg/ipe?extensions=com.intellij.langCodeStyleSettingsProvider) extension point .
```XML
```
## Run the Project
[Run](creating-plugin-project.html#running-the-plugin) the plugin.
In the IDE Development Instance, open the Simple Language code formatting page: `Settings | Editor | Code Style | Simple`.
