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.

382 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.
Closed
JDK 25 compatibility
bughelp wantedkryo 6
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelRepository active this monthContributing guide available

EsotericSoftware / kryo · #1246 · Dec 24, 2025 · HTML · 6,545 stars

6 comments2 reactions0 assignees
Closed
PassKey "User verification requirement" error's are not translated
area/authentication/webauthnarea/translationshelp wantedkind/enhancementpriority/lowstatus/auto-bumpstatus/auto-expireteam/core-authnteam/core-clients
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

keycloak / keycloak · #44963 · Dec 17, 2025 · Java · 34,398 stars

5 comments3 reactions0 assignees
Closed
Deep Stack Trace from Long Min/Max Column Values
help wantedstale
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

apache / pinot · #17378 · Dec 16, 2025 · Java · 4,937 stars

4 comments0 reactions0 assignees
Closed
Support casting struct/array/map to JSON
good first issueno-issue-activitytype/enhancement
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

StarRocks / starrocks · #66720 · Dec 15, 2025 · Java · 5,717 stars

4 comments1 reaction1 assignee
Closed
Device activity does not recognize iOS 26 correct
area/account/uihelp wantedkind/bugpriority/lowstatus/auto-expirestatus/expired-by-botstatus/reopenedteam/core-authnteam/core-clients
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

keycloak / keycloak · #44741 · Dec 8, 2025 · Java · 34,398 stars

7 comments2 reactions0 assignees
Closed
Terms and Conditions Accepted Timestamp
area/admin/uiarea/user-profilehelp wantedkind/bugpriority/normalstatus/auto-bumpstatus/auto-expireteam/core-iamteam/core-shared
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

keycloak / keycloak · #44591 · Dec 1, 2025 · Java · 34,398 stars

10 comments1 reaction0 assignees
Closed
access public S3 storage anonymously
good first issue
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

trinodb / trino · #27512 · Nov 30, 2025 · Java · 9,113 stars

7 comments0 reactions0 assignees
Closed
Segregate metrics configs by reporter type
area:code-qualityarea:configarea:corearea:metricsfrom-jiragood first issuepriority:mediumtype:improvement
Why recommendedNo comments yet · Has a beginner-friendly label
No comments yetHas a beginner-friendly label

apache / hudi · #14583 · Nov 30, 2025 · Java · 4,823 stars

0 comments0 reactions1 assignee