You are viewing the documentation for a prerelease version. View Latest

Read-only formats

Commons Compress reads, but cannot write, some formats. Compress4J supports these formats with an extractor or decompressor only; no creator or compressor class exists for them.

Convention

  • The class Javadoc starts with Read-only: Compress4J provides no creator for this format.

  • The format’s page opens with the note Read-only: Compress4J can extract this format but cannot create it.

  • Format lists mark the format with (read-only).

  • Extractors inherit the same extraction guards as every other archive extractor: path traversal, escaping symlink policy, and entry and size limits.

Read-only formats

ARJ, UNIX dump, Unix compress (.Z and .tar.Z), Deflate64 and Brotli.

Want to help? Learn how to contribute to the Compress4J docs ›