In VSCode, why isn't the Javadoc appearing when hovering?

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There could be several reasons why the Javadoc is not appearing when hovering in VSCode:

1. The language support extension for Java may not be installed or enabled. Check if the Java extension is installed and enabled in your VSCode by going to the Extensions tab.

2. The Java Language Server may not be running. Check if the Java Language Server is installed and enabled in the Java extension settings.

3. The Javadoc generation may not be enabled in the project settings. Check if the Javadoc comments are added to the code and if the Javadoc generation is turned on in the project settings.

4. The Javadoc may not be properly formatted. Check if the Javadoc comments are properly formatted according to the Javadoc syntax.

5. There may be conflicts with other extensions or plugins installed in VSCode. Try disabling other extensions or plugins to see if they are causing conflicts.

6. The Javadoc may not be available for the specific library or framework being used. Check if the Javadoc for the specific library or framework being used is properly installed and configured.