google/j2objc

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A Java to iOS Objective-C translation tool and runtime.

Stars: 6k
Forks: 999
Open beginner issues: 0
Indexed issues: 69
Avg merge: 19h 20m
Merged PRs (30d): 14

Dominant language: Java
License: No license data
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 16, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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69 open issues indexed

dispatch_async and JavaLangThread: Assertion failed Open

google/j2objc#341 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Translation of class where static method and inner class have same name causes redefinition compilation errors Open

google/j2objc#446 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
HttpURLConnection synchronously downloads complete response in memory Open

google/j2objc#571 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
java.net.SocketTimeoutException When switching from https to http Open

google/j2objc#617 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Selector.select() does not block after SelectionKey.cancel() or SocketChannel.close() Open

google/j2objc#645 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Several RxJava Tests failing Open

google/j2objc#685 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
warning: (Recovered) Internal inconsistency detected during lambda shape analysis Open

google/j2objc#725 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
FileChannelImpl leak fix in #604 requires the channel's parent stream to be long-lived Open

google/j2objc#728 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
generated file hierarchy package headers may conflict with C++ files Open

google/j2objc#739 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Feature request: auto-generated module.modulemap for working with swift (--swift-friendly) Open

google/j2objc#752 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Feature request:NS_SWIFT_NAME (--swift-friendly) Open

google/j2objc#753 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Https support is unavailable on swift Open

google/j2objc#758 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Include okio.* headers to public Open

google/j2objc#790 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
java.net.IDN toASCII wrong results Open

google/j2objc#791 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Cannot perform atomic access on ARMv7 Open

google/j2objc#803 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
SimpleDateFormat uses numerals of system locale not the provided one Open

google/j2objc#804 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Annotation type and annotation's creation method (create_XXXX) are missing Open

google/j2objc#815 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
segfault when calling a mockito spy Open

google/j2objc#830 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
IosHttpURLConnection should throw when interrupted Open

google/j2objc#851 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
RSA KeyPairGenerator problems on Android and iOS Open

google/j2objc#865 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Xcode 9 (Swift 4) - java.net.SocketTimeoutException Open

google/j2objc#883 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Problem with isAssignable in IOSConcreteClass.m Open

google/j2objc#890 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Using mockito to mock interface with @ObjectiveCName results in failure Open

google/j2objc#904 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Duplicated member variable Open

google/j2objc#907 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Very slow compilation of generated Objective C files Open

google/j2objc#980 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
New @ObjectiveCType annotation Open

enhancement

google/j2objc#1026 · 0 comments · 4 reactions · 0 assignees · Indexed Sep 16, 2026
New @ObjectiveCConforms annotation Open

enhancement

google/j2objc#1027 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Enhancement request: optionally allow @WeakOuter to be the default (with new @StrongOuter annotation) Open

google/j2objc#1029 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
MulticastSocket.setNetworkInterface issue Open

google/j2objc#1061 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
iOS: "java.io.IOException: Couldn't get lock for" while create instance of FileHandler Open

google/j2objc#1226 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Static accessors should be private if class properties are generated Open

google/j2objc#1235 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Swift name should only be set if it's different than the Objective C name Open

google/j2objc#1236 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
"java.net.NoRouteToHostException: Host unreachable" in SocketFactoryTest Open

google/j2objc#1292 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
compareTo() doesn't throw ClassCastException with non-comparible object Open

google/j2objc#1309 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Update JRE JUnit to Android's platform/external/junit/. Open

google/j2objc#1318 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Compiler error when changing the package path Open

google/j2objc#1346 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add internal JRE support for dalvik.system.VMRuntime to support additional unit tests. Open

google/j2objc#1357 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
test_serialization in libcore.java.nio.file are failing Open

google/j2objc#1425 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Serialization test failing in org.apache.harmony.tests.javax.security.auth.SubjectTest Open

google/j2objc#1426 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
SQLite.JDBCDriver not supported for java.sql tests Open

google/j2objc#1447 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
IosHttpURLConnection. During redirection, if intermediate cookies have expired, the next request still has this cookie Open

google/j2objc#1451 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
ARGC exceptions when translating Open

google/j2objc#1471 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add JSON xcframework to distribution. Open

duplicate

google/j2objc#1572 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 16, 2026
Build jre_emul.jar with ijar to reduce size Open

enhancement

google/j2objc#1574 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
java.lang.AssertionError: Duplicate type name Open

google/j2objc#1715 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
jarjar.rules file creates wrong j2objc.jar Open

google/j2objc#1805 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
[Proposal] build xcframeworks M1 compliant (ios-arm64_armv7 & ios-arm64_i386_x86_64-simulator) Open

google/j2objc#1831 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Generate javadocs so docRoot tags refer to external sites Open

google/j2objc#1833 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Cyclic reference is creating memory leak Open

google/j2objc#1848 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Abstract method that returns byte[] array translated with --objc-generics raises compile error Open

google/j2objc#1962 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026

google/j2objc

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