Java Good First Issues

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Open

Pact weird behaviour in the contract if same test is present in two class files for same consumer and provider pair.

buggood first issuehelp wantedtriage

pact-foundation/pact-jvm #1,893 opened Jan 12, 2026 · Groovy · 1,127 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

11 comments0 reactions0 assignees

Open

Default Media player for downloads not selected automatically

bugdownloadergood first issueregression

TeamNewPipe/NewPipe #13,043 opened Jan 12, 2026 · Java · 38,153 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

16 comments2 reactions0 assignees

Open

Memory leak at VectorAdapter<P> because P destructor never called

help wantedquestion

bytedeco/javacpp #823 opened Jan 12, 2026 · Java · 4,279 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

2 comments0 reactions0 assignees

Open

CompatibleFieldSerializer: Subsequent fields are null after skipping an unknown field

bughelp wanted

EsotericSoftware/kryo #1,247 opened Jan 12, 2026 · HTML · 6,052 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

5 comments0 reactions0 assignees

Open

[Feature] Sync Recycler improvements from Netty to fix memory leak

SOFA-8th-Challengedifficulty-mediumgood first issuehelp wanted

sofastack/sofa-jraft #1,240 opened Jan 11, 2026 · Java · 3,406 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

Hardening: overly Permissive CORS in preflight response on 'account' endpoint

area/account/apihelp wantedkind/enhancementstatus/triageteam/core-clientsteam/security

keycloak/keycloak #45,310 opened Jan 9, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

[Feature][Seatunnel] Introduce support for key vaults such as Azure KeyVault in configs

featurehelp wanted

apache/seatunnel #10,309 opened Jan 9, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

7 comments0 reactions0 assignees

Open

Multiple group mappers not working since version 26

area/ldaphelp wantedkind/bugpriority/lowstatus/auto-bumpstatus/auto-expireteam/core-iam

keycloak/keycloak #45,256 opened Jan 8, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments4 reactions0 assignees

Open

Update AWS SDK to support IRSA (IAM Roles for Service Accounts) in EKS

help wanted

apache/seatunnel #10,302 opened Jan 8, 2026 · Java · 6,897 stars

Why recommendedHas a beginner-friendly label

Has a beginner-friendly label

3 comments0 reactions1 assignee

Open

avcodec_open2() error -542398533: Could not open video codec.

help wantedquestion

bytedeco/javacv #2,373 opened Jan 8, 2026 · Java · 6,985 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

4 comments0 reactions0 assignees

Open

[feature][JDBC] JDBC Source Dialect-Aware Sampled Balanced Sharding (Database-Side Sampling)

help wanted

apache/seatunnel #10,288 opened Jan 6, 2026 · Java · 6,897 stars

Why recommendedHas a beginner-friendly label

Has a beginner-friendly label

2 comments1 reaction1 assignee

Open

Uninstalled some system apps(safe to remove) and then facing this system launcher keeps stopping

Help Wanted

MuntashirAkon/AppManager #1,850 opened Jan 6, 2026 · Java · 3,673 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

[Bug] [PostgreSQL CDC] PostgreSQL synchronization to Redis error

bughelp wanted

apache/seatunnel #10,284 opened Jan 6, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

1 comment0 reactions0 assignees

Open

Replace remaining usages of Guava's `BaseEncoding`

EnhancementGuavagood first issue

bitcoinj/bitcoinj #3,982 opened Jan 5, 2026 · Java · 4,687 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments0 reactions0 assignees

Open

[Bug] Cannot directly call APISIX gateway via @DubboReference annotation (Triple protocol)

help wanted

apache/dubbo #15,968 opened Jan 5, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Replace calls to deprecated `com.google.errorprone.CompilationTestHelper#addSourceFile` in tests

cleanupgood first issue

uber/NullAway #1,425 opened Jan 1, 2026 · Java · 3,462 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments1 reaction0 assignees

Open

[FEATURE] Arabic (Islamic Hijri) calendar in Smartspace

feature-requestgood first issuestatus: reviewed

LawnchairLauncher/lawnchair #6,241 opened Jan 1, 2026 · Java · 7,962 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

5 comments1 reaction1 assignee

Open

The app crashes when I try to open it from the background after a few hours.

bughelp wantedplaylist

TeamNewPipe/NewPipe #12,985 opened Jan 1, 2026 · Java · 38,153 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

CREATE TABLE AS SELECT does not support all possible casting

BugGood first issue

questdb/questdb #6,583 opened Dec 30, 2025 · Java · 13,403 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Transifex automation and file depenent mappings don't work together

Area-TranslationIssue-Severe (high)help wanted

TeamAmaze/AmazeFileManager #4,533 opened Dec 29, 2025 · Java · 4,883 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

7 comments1 reaction1 assignee

java

Open

Pact weird behaviour in the contract if same test is present in two class files for same consumer and provider pair.

buggood first issuehelp wantedtriage

pact-foundation/pact-jvm #1,893 opened Jan 12, 2026 · Groovy · 1,127 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

11 comments0 reactions0 assignees

Open

Default Media player for downloads not selected automatically

bugdownloadergood first issueregression

TeamNewPipe/NewPipe #13,043 opened Jan 12, 2026 · Java · 38,153 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

16 comments2 reactions0 assignees

Open

Memory leak at VectorAdapter<P> because P destructor never called

help wantedquestion

bytedeco/javacpp #823 opened Jan 12, 2026 · Java · 4,279 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

2 comments0 reactions0 assignees

Open

CompatibleFieldSerializer: Subsequent fields are null after skipping an unknown field

bughelp wanted

EsotericSoftware/kryo #1,247 opened Jan 12, 2026 · HTML · 6,052 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

5 comments0 reactions0 assignees

Open

[Feature] Sync Recycler improvements from Netty to fix memory leak

SOFA-8th-Challengedifficulty-mediumgood first issuehelp wanted

sofastack/sofa-jraft #1,240 opened Jan 11, 2026 · Java · 3,406 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

Hardening: overly Permissive CORS in preflight response on 'account' endpoint

area/account/apihelp wantedkind/enhancementstatus/triageteam/core-clientsteam/security

keycloak/keycloak #45,310 opened Jan 9, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

[Feature][Seatunnel] Introduce support for key vaults such as Azure KeyVault in configs

featurehelp wanted

apache/seatunnel #10,309 opened Jan 9, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

7 comments0 reactions0 assignees

Open

Multiple group mappers not working since version 26

area/ldaphelp wantedkind/bugpriority/lowstatus/auto-bumpstatus/auto-expireteam/core-iam

keycloak/keycloak #45,256 opened Jan 8, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments4 reactions0 assignees

Open

Update AWS SDK to support IRSA (IAM Roles for Service Accounts) in EKS

help wanted

apache/seatunnel #10,302 opened Jan 8, 2026 · Java · 6,897 stars

Why recommendedHas a beginner-friendly label

Has a beginner-friendly label

3 comments0 reactions1 assignee

Open

avcodec_open2() error -542398533: Could not open video codec.

help wantedquestion

bytedeco/javacv #2,373 opened Jan 8, 2026 · Java · 6,985 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

4 comments0 reactions0 assignees

Open

[feature][JDBC] JDBC Source Dialect-Aware Sampled Balanced Sharding (Database-Side Sampling)

help wanted

apache/seatunnel #10,288 opened Jan 6, 2026 · Java · 6,897 stars

Why recommendedHas a beginner-friendly label

Has a beginner-friendly label

2 comments1 reaction1 assignee

Open

Uninstalled some system apps(safe to remove) and then facing this system launcher keeps stopping

Help Wanted

MuntashirAkon/AppManager #1,850 opened Jan 6, 2026 · Java · 3,673 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

[Bug] [PostgreSQL CDC] PostgreSQL synchronization to Redis error

bughelp wanted

apache/seatunnel #10,284 opened Jan 6, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

1 comment0 reactions0 assignees

Open

Replace remaining usages of Guava's `BaseEncoding`

EnhancementGuavagood first issue

bitcoinj/bitcoinj #3,982 opened Jan 5, 2026 · Java · 4,687 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments0 reactions0 assignees

Open

[Bug] Cannot directly call APISIX gateway via @DubboReference annotation (Triple protocol)

help wanted

apache/dubbo #15,968 opened Jan 5, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Replace calls to deprecated `com.google.errorprone.CompilationTestHelper#addSourceFile` in tests

cleanupgood first issue

uber/NullAway #1,425 opened Jan 1, 2026 · Java · 3,462 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments1 reaction0 assignees

Open

[FEATURE] Arabic (Islamic Hijri) calendar in Smartspace

feature-requestgood first issuestatus: reviewed

LawnchairLauncher/lawnchair #6,241 opened Jan 1, 2026 · Java · 7,962 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

5 comments1 reaction1 assignee

Open

The app crashes when I try to open it from the background after a few hours.

bughelp wantedplaylist

TeamNewPipe/NewPipe #12,985 opened Jan 1, 2026 · Java · 38,153 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

CREATE TABLE AS SELECT does not support all possible casting

BugGood first issue

questdb/questdb #6,583 opened Dec 30, 2025 · Java · 13,403 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Transifex automation and file depenent mappings don't work together

Area-TranslationIssue-Severe (high)help wanted

TeamAmaze/AmazeFileManager #4,533 opened Dec 29, 2025 · Java · 4,883 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

7 comments1 reaction1 assignee

java

Loading results...

Open

Pact weird behaviour in the contract if same test is present in two class files for same consumer and provider pair.

buggood first issuehelp wantedtriage

pact-foundation/pact-jvm #1,893 opened Jan 12, 2026 · Groovy · 1,127 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

11 comments0 reactions0 assignees

Open

Default Media player for downloads not selected automatically

bugdownloadergood first issueregression

TeamNewPipe/NewPipe #13,043 opened Jan 12, 2026 · Java · 38,153 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

16 comments2 reactions0 assignees

Open

Memory leak at VectorAdapter<P> because P destructor never called

help wantedquestion

bytedeco/javacpp #823 opened Jan 12, 2026 · Java · 4,279 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

2 comments0 reactions0 assignees

Open

CompatibleFieldSerializer: Subsequent fields are null after skipping an unknown field

bughelp wanted

EsotericSoftware/kryo #1,247 opened Jan 12, 2026 · HTML · 6,052 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

5 comments0 reactions0 assignees

Open

[Feature] Sync Recycler improvements from Netty to fix memory leak

SOFA-8th-Challengedifficulty-mediumgood first issuehelp wanted

sofastack/sofa-jraft #1,240 opened Jan 11, 2026 · Java · 3,406 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

Hardening: overly Permissive CORS in preflight response on 'account' endpoint

area/account/apihelp wantedkind/enhancementstatus/triageteam/core-clientsteam/security

keycloak/keycloak #45,310 opened Jan 9, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

[Feature][Seatunnel] Introduce support for key vaults such as Azure KeyVault in configs

featurehelp wanted

apache/seatunnel #10,309 opened Jan 9, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

7 comments0 reactions0 assignees

Open

Multiple group mappers not working since version 26

area/ldaphelp wantedkind/bugpriority/lowstatus/auto-bumpstatus/auto-expireteam/core-iam

keycloak/keycloak #45,256 opened Jan 8, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments4 reactions0 assignees

Open

Update AWS SDK to support IRSA (IAM Roles for Service Accounts) in EKS

help wanted

apache/seatunnel #10,302 opened Jan 8, 2026 · Java · 6,897 stars

Why recommendedHas a beginner-friendly label

Has a beginner-friendly label

3 comments0 reactions1 assignee

Open

avcodec_open2() error -542398533: Could not open video codec.

help wantedquestion

bytedeco/javacv #2,373 opened Jan 8, 2026 · Java · 6,985 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

4 comments0 reactions0 assignees

Open

[feature][JDBC] JDBC Source Dialect-Aware Sampled Balanced Sharding (Database-Side Sampling)

help wanted

apache/seatunnel #10,288 opened Jan 6, 2026 · Java · 6,897 stars

Why recommendedHas a beginner-friendly label

Has a beginner-friendly label

2 comments1 reaction1 assignee

Open

Uninstalled some system apps(safe to remove) and then facing this system launcher keeps stopping

Help Wanted

MuntashirAkon/AppManager #1,850 opened Jan 6, 2026 · Java · 3,673 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

1 comment0 reactions0 assignees

Open

[Bug] [PostgreSQL CDC] PostgreSQL synchronization to Redis error

bughelp wanted

apache/seatunnel #10,284 opened Jan 6, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly label

1 comment0 reactions0 assignees

Open

Replace remaining usages of Guava's `BaseEncoding`

EnhancementGuavagood first issue

bitcoinj/bitcoinj #3,982 opened Jan 5, 2026 · Java · 4,687 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

8 comments0 reactions0 assignees

Open

[Bug] Cannot directly call APISIX gateway via @DubboReference annotation (Triple protocol)

help wanted

apache/dubbo #15,968 opened Jan 5, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Replace calls to deprecated `com.google.errorprone.CompilationTestHelper#addSourceFile` in tests

cleanupgood first issue

uber/NullAway #1,425 opened Jan 1, 2026 · Java · 3,462 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

2 comments1 reaction0 assignees

Open

[FEATURE] Arabic (Islamic Hijri) calendar in Smartspace

feature-requestgood first issuestatus: reviewed

LawnchairLauncher/lawnchair #6,241 opened Jan 1, 2026 · Java · 7,962 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

5 comments1 reaction1 assignee

Open

The app crashes when I try to open it from the background after a few hours.

bughelp wantedplaylist

TeamNewPipe/NewPipe #12,985 opened Jan 1, 2026 · Java · 38,153 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

3 comments1 reaction0 assignees

Open

CREATE TABLE AS SELECT does not support all possible casting

BugGood first issue

questdb/questdb #6,583 opened Dec 30, 2025 · Java · 13,403 stars

Why recommendedNo assignee yet · Has a beginner-friendly label

No assignee yetHas a beginner-friendly labelContributing guide available

4 comments0 reactions0 assignees

Open

Transifex automation and file depenent mappings don't work together

Area-TranslationIssue-Severe (high)help wanted

TeamAmaze/AmazeFileManager #4,533 opened Dec 29, 2025 · Java · 4,883 stars

Why recommendedHas a beginner-friendly label · Contributing guide available

Has a beginner-friendly labelContributing guide available

7 comments1 reaction1 assignee

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Java Good First Issues