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How to Install and Execute SonarLint in IntelliJ IDEA

SonarLint in IntelliJ IDEA

(Looking for SonarQube/SonarCloud setup then check here How to setup SonarQube in Intellij)

Implementing SonarLint in IntelliJ IDEA can help you maintain high code quality by identifying bugs, vulnerabilities, and code smells in real-time. Follow these steps to set up and use SonarLint:

Step 1: Open IntelliJ IDEAEnsure that IntelliJ IDEA is running on your system. If not, launch the application from your desktop or start menu.

Step 2: Access the Plugin MarketplaceNavigate to File > Settings.
In the Settings dialog, select Plugins from the left-hand pane to open the plugin marketplace.





A screenshot of a computer Description automatically generated


Step 3: Install SonarLintIn the Plugins section, switch to the Marketplace tab.
  • Use the search bar at the top to search for “SonarLint”.
  • Find SonarLint in the search results and click the Install button next to it.
  • After installation, you might be prompted to restart IntelliJ IDEA. Click Restart IDE to apply the changes.


Step 4: Open SonarLintAfter restarting, SonarLint is now installed and ready to use.
To open SonarLint, navigate to View > Tool Windows > SonarLint.
Alternatively, you can find the SonarLint tab usually located at the bottom or side of the IDE window.



Step 5: Configure SonarLint (Optional)
  • To configure SonarLint settings, go back to File > Settings, then navigate to Tools > SonarLint.
  • Here, you can adjust various settings, connect to a SonarQube or SonarCloud server for additional features, and manage project bindings.


Conclusion

You have successfully installed and opened SonarLint in IntelliJ IDEA. SonarLint will now automatically analyze your code for bugs, vulnerabilities, and code smells in real-time as you write code.

Example
  • Create a Maven Spring Boot project.
  • Select a file from the project and right-click > go to SonarLint > select Analyze with SonarLint.



Here is the User112 class file which I have used. It contains two attributes, username and password, along with their getters and setters.



Before SonarLint Analysis

Java
public class User112 {
private String username;
private String password;

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}
}

After Applying Analyze with SonarLint



After running SonarLint, 2 issues were detected. SonarLint will also explain why these issues exist and how to fix them.

By following these steps, you can effectively implement SonarLint in IntelliJ IDEA and maintain high code quality in your projects.

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