Java Metrics

This extension analyzes Java source files and calculates software metrics to help you understand code complexity and maintainability.

Features

• Cyclomatic Complexity
• Halstead Metrics (Length, Volume, Difficulty, etc.)
• LCOM3 (Lack of Cohesion in Methods)
• Lines of Code

Usage

1. Open a Java file or project in your workspace.
2. Navigate to the Metrics container on the left (ruler symbol) and click Calculate Metrics.
3. A new tree representation is created from your project and displayed in the project-structure view.
4. Expand and navigate the tree as usual by clicking on the arrows.
5. Select an entry in the tree to display the corresponding metrics.
   • Metrics are shown at the bottom of your VS Code window in the Metrics tab.
6. After changing your code, re-run the command to update the metrics.

Requirements

• Only one Java project may be in your workspace.
• If there is more than one, most metrics will still work as intended. However, metrics regarding the whole project may be incorrect.

Extension Settings

• Java-metrics: enabled Metrics
  Select which metrics you want to be calculated and displayed from the list of available metrics.