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Enable Java wrapper generation for Vec4i #27567 Fixes an issue where Java wrapper generation skips methods using Vec4i. Related PR in opencv_contrib: https://github.com/opencv/opencv_contrib/pull/3988 The root cause was the absence of Vec4i in gen_java.json, which led to important methods such as aruco.drawCharucoDiamond() and ximgproc.HoughPoint2Line() being omitted from the Java bindings. This PR includes the following changes: - Added Vec4i definition to gen_java.json - Updated gen_java.py to handle jintArray-based types properly - ~~Also adjusted jn_args and jni_var for Vec2d and Vec3d to ensure correct JNI behavior~~ The modified Java wrapper generator successfully builds and includes the expected methods using Vec4i. ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake