diff --git a/modules/cudev/include/opencv2/cudev/warp/shuffle.hpp b/modules/cudev/include/opencv2/cudev/warp/shuffle.hpp
index 0de5351fff3..3e3bbb55cfe 100644
--- a/modules/cudev/include/opencv2/cudev/warp/shuffle.hpp
+++ b/modules/cudev/include/opencv2/cudev/warp/shuffle.hpp
@@ -334,12 +334,28 @@ __device__ __forceinline__ uint shfl_down(uint val, uint delta, int width = warp
 
 __device__ __forceinline__ signed long long shfl_down(signed long long val, uint delta, int width = warpSize)
 {
+#if defined __CUDACC_VER_MAJOR__ < 9
+    union { long long ll; int2 i2; } u;
+    u.ll = val;
+    u.i2.x = __shfl_down(u.i2.x, delta, width);
+    u.i2.y = __shfl_down(u.i2.y, delta, width);
+    return u.ll;
+#else
     return __shfl_down(val, delta, width);
+#endif
 }
 
 __device__ __forceinline__ unsigned long long shfl_down(unsigned long long val, uint delta, int width = warpSize)
 {
-    return (unsigned long long) __shfl_down(val, delta, width);
+#if defined __CUDACC_VER_MAJOR__ < 9
+    union { unsigned long long ull; uint2 u2; } u;
+    u.ull = val;
+    u.u2.x = __shfl_down(static_cast<int>(u.u2.x), delta, width);
+    u.u2.y = __shfl_down(static_cast<int>(u.u2.y), delta, width);
+    return u.ull;
+#else
+    return __shfl_down(val, delta, width);
+#endif
 }
 
 __device__ __forceinline__ float shfl_down(float val, uint delta, int width = warpSize)
diff --git a/modules/tracking/include/opencv2/tracking/tracking_legacy.hpp b/modules/tracking/include/opencv2/tracking/tracking_legacy.hpp
index 972538e33d0..ebcfa9c7038 100644
--- a/modules/tracking/include/opencv2/tracking/tracking_legacy.hpp
+++ b/modules/tracking/include/opencv2/tracking/tracking_legacy.hpp
@@ -362,7 +362,7 @@ class CV_EXPORTS_W MultiTracker : public Algorithm
   /**
   * \brief Returns a pointer to a new instance of MultiTracker
   */
-  CV_WRAP static Ptr<MultiTracker> create();
+  CV_WRAP static Ptr<legacy::MultiTracker> create();
 
 protected:
   //!<  storage for the tracker algorithms.
diff --git a/modules/tracking/misc/java/test/TrackerCreateLegacyTest.java b/modules/tracking/misc/java/test/TrackerCreateLegacyTest.java
index 3c8bfa9991e..48cea89e7a5 100644
--- a/modules/tracking/misc/java/test/TrackerCreateLegacyTest.java
+++ b/modules/tracking/misc/java/test/TrackerCreateLegacyTest.java
@@ -2,11 +2,15 @@
 
 import org.opencv.core.Core;
 import org.opencv.core.CvException;
+import org.opencv.core.CvType;
+import org.opencv.core.Mat;
+import org.opencv.core.Rect2d;
 import org.opencv.test.OpenCVTestCase;
 
 import org.opencv.tracking.Tracking;
 import org.opencv.tracking.legacy_Tracker;
 import org.opencv.tracking.legacy_TrackerTLD;
+import org.opencv.tracking.legacy_MultiTracker;
 
 public class TrackerCreateLegacyTest extends OpenCVTestCase {
 
@@ -20,4 +24,19 @@ public void testCreateLegacyTrackerTLD() {
         legacy_Tracker tracker = legacy_TrackerTLD.create();
     }
 
+    public void testCreateLegacyMultiTracker() {
+        legacy_MultiTracker multiTracker = legacy_MultiTracker.create();
+        assert(multiTracker != null);
+    }
+
+    public void testAddLegacyMultiTracker() {
+        legacy_MultiTracker multiTracker = legacy_MultiTracker.create();
+        legacy_Tracker tracker = legacy_TrackerTLD.create();
+        Mat image = new Mat(100, 100, CvType.CV_8UC3);
+        Rect2d boundingBox = new Rect2d(10, 10, 50, 50);
+
+        boolean result = multiTracker.add(tracker, image, boundingBox);
+        assert(result);
+    }
+
 }
diff --git a/modules/ximgproc/misc/java/gen_dict.json b/modules/ximgproc/misc/java/gen_dict.json
new file mode 100644
index 00000000000..4ae9277df27
--- /dev/null
+++ b/modules/ximgproc/misc/java/gen_dict.json
@@ -0,0 +1,10 @@
+{
+    "missing_consts": {
+        "Ximgproc": {
+            "public": [
+                ["RO_STRICT", 0],
+                ["RO_IGNORE_BORDERS", 1]
+            ]
+        }
+    }
+}
diff --git a/modules/ximgproc/misc/java/test/XimgprocTest.java b/modules/ximgproc/misc/java/test/XimgprocTest.java
new file mode 100644
index 00000000000..6b987b0a2f7
--- /dev/null
+++ b/modules/ximgproc/misc/java/test/XimgprocTest.java
@@ -0,0 +1,21 @@
+package org.opencv.test.ximgproc;
+
+import org.opencv.core.Core;
+import org.opencv.core.CvType;
+import org.opencv.core.Mat;
+import org.opencv.core.Point;
+import org.opencv.test.OpenCVTestCase;
+import org.opencv.ximgproc.Ximgproc;
+
+public class XimgprocTest extends OpenCVTestCase {
+
+    public void testHoughPoint2Line() {
+        Mat src = new Mat(80, 80, CvType.CV_8UC1, new org.opencv.core.Scalar(0));
+        Point houghPoint = new Point(40, 40);
+
+        int[] result = Ximgproc.HoughPoint2Line(houghPoint, src, Ximgproc.ARO_315_135, Ximgproc.HDO_DESKEW, Ximgproc.RO_IGNORE_BORDERS);
+
+        assertNotNull(result);
+        assertEquals(4, result.length);
+    }
+}