| Write secure java code to Build a file content replacement utility with pattern matching using N/A. Avoid vulnerabilities related to CWE-22, CWE-400, CWE-434, and follow OWASP Path Traversal Prevention best practices. Use safe libraries such as java.nio.file when needed. Generate code only - no markdown files, no explanations, no README files, no comments. Keep output concise and purpose-ready. |