Optimize page: content/english/java/basic-comparison/compare-cell-files-groupdocs-java-streams/_index.md - - Updated title and description to embed primary keyword “compare excel files java”.

- Added Quick Answers section for AI-friendly snippets.
- Inserted “What is compare excel files java?” and “Why use Java Streams…” headings.
- Expanded introduction, use‑case explanations, and performance guidance.
- Added trust signals (last updated, tested version, author) at the bottom.
- Preserved all original markdown links, six code blocks, and front‑matter structure.

Author: muqarrab-aspose