How to implement the function of idea self-contained code line count feature?

To implement the feature of automatically counting lines of code for an idea, you can follow these steps:

1. Open your project or code folder, and open your project in IDEA.
2. Navigate to any folder or file within the project, choose a folder or file that you want to count the lines of code in.
3. In the menu bar of Idea, select “Analyze” -> “Calculate Code Metrics”.
4. In the pop-up window, select the “Lines of Code” option and click on the “Calculate” button.
5. The idea will automatically count and display the number of code lines in the selected folder or file.

By following the above steps, you can easily count the number of lines of code in IntelliJ IDEA. If you want to count the total lines of code in the entire project, you can select the project root directory in step 2, and then follow steps 3-4 to proceed.