ExtractArchiveEvent

Gets fired while a downloaded Java archive is being extracted.

Fields

archiveTypeArchiveType

The archive format currently being extracted.

progressint

The extraction progress in percent, from 0 to 100.

Types

ArchiveType

zipThe archive is a ZIP file

tarGzThe archive is a gzipped tarball

When it fires

This fires immediately after JavaArchiveDownloadEvent finishes and the archive’s checksum has been verified. Which archive format is used - zip or tarGz - depends on the Adoptium asset for the current platform (Windows typically ships .zip, Linux/macOS typically ship .tar.gz).

Both formats always post a progress: 0 event right at the start. After that:

• zip extraction reports whole-percent progress (0-100) throttled to roughly every 100ms, based on the number of ZIP entries processed - the last entry always forces a final event even if it lands inside the 100ms window, so you’re guaranteed to see progress: 100.
• tar.gz extraction estimates progress from compressed bytes read through the gzip stream (capped at 99 until fully done, since tar entries don’t have a fixed upfront total), and posts a guaranteed final progress: 100 event once the whole stream has been consumed. If the archive size can’t be determined, progress is reported as -1 for the in-between events.