Curated Issues

Java Good First Issues

Browse open source issues tagged with Java in the issue metadata. Results stay focused on work that can become public contribution evidence.

4,646 matching issues

Java

Slice signals

  • Average annotated difficulty: 2.5/5 across 5,028 issues.
  • 75% of 5,028 time estimates are one day or less.
Open
Custom Entity API non-vanilla entities
Feature RequestHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

GeyserMC / Geyser · #6598 · Aug 7, 2026 · Java · 4,297 stars

3 comments0 reactions0 assignees
Open
Blueprint for Porting Apache Airflow Breeze to Apache Sedona
attention neededbehavior changedocshelp wantedimprovementpre-commitpythonquestionrootsedona-docker
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

apache / sedona · #2993 · May 23, 2026 · Scala · 1,953 stars

0 comments0 reactions0 assignees
Open
Remove deprecated methods for 1.12.0
good first issue
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

apache / iceberg · #16445 · May 20, 2026 · Java · 5,146 stars

6 comments0 reactions0 assignees
Open
PR-I: Add dedicated knowledge sources
featurehelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly label

apache / seatunnel · #10921 · May 19, 2026 · Java · 6,897 stars

1 comment0 reactions0 assignees