diff --git a/modules/java/src/java/utils.java b/modules/java/src/java/utils.java
index 2c73d1fab5..58748d4119 100644
--- a/modules/java/src/java/utils.java
+++ b/modules/java/src/java/utils.java
@@ -9,12 +9,12 @@ public class utils {
 		Mat res;
 		int count = (pts!=null) ? pts.size() : 0;
 		if(count>0){
-			res = new Mat(1, count, CvType.CV_64FC2); //Point can be saved into double[2]
-			double[] buff = new double[count*2];
+			res = new Mat(1, count, CvType.CV_32SC2); //Point can be saved into double[2]
+			int[] buff = new int[count*2];
 			for(int i=0; i<count; i++) {
 				Point p = pts.get(i);
-				buff[i*2]   = p.x;
-				buff[i*2+1] = p.y;
+				buff[i*2]   = (int)p.x;
+				buff[i*2+1] = (int)p.y;
 			}
 			res.put(0, 0, buff);
 		} else {
@@ -25,15 +25,15 @@ public class utils {
 
 	public static void Mat_to_vector_Point(Mat m, List<Point> pts) {
 		if(pts == null)
-			return;
+			throw new java.lang.IllegalArgumentException();
 		int cols = m.cols();
-		if(!CvType.CV_64FC2.equals(m.type()) ||  m.rows()!=1 || cols%2!=0)
-			return;
+		if(!CvType.CV_32SC2.equals(m.type()) ||  m.rows()!=1 )
+			throw new java.lang.IllegalArgumentException();
 		
 		pts.clear();
-		double[] buff = new double[cols];
+		int[] buff = new int[2*cols];
 		m.get(0, 0, buff);
-		for(int i=0; i<cols/2; i++) {
+		for(int i=0; i<cols; i++) {
 			pts.add( new Point(buff[i*2], buff[i*2+1]) );
 		}
 	}
@@ -58,15 +58,15 @@ public class utils {
 
 	public static void Mat_to_vector_Mat(Mat m, List<Mat> mats) {
 		if(mats == null)
-			return;
+			throw new java.lang.IllegalArgumentException();
 		int cols = m.cols();
-		if(!CvType.CV_32SC2.equals(m.type()) ||  m.rows()!=1 || cols%2!=0)
-			return;
+		if(!CvType.CV_32SC2.equals(m.type()) ||  m.rows()!=1 )
+			throw new java.lang.IllegalArgumentException();
 		
 		mats.clear();
-		int[] buff = new int[cols];
+		int[] buff = new int[cols*2];
 		m.get(0, 0, buff);
-		for(int i=0; i<cols/2; i++) {
+		for(int i=0; i<cols; i++) {
 			long addr = (((long)buff[i*2])<<32) | ((long)buff[i*2+1]);
 			mats.add( new Mat(addr) );
 		}
@@ -77,42 +77,136 @@ public class utils {
 	}
 
 	public static Mat vector_float_to_Mat(List<Float> fs) {
-		// TODO Auto-generated method stub
-		return null;
+		Mat res;
+		int count = (fs!=null) ? fs.size() : 0;
+		if(count>0){
+			res = new Mat(1, count, CvType.CV_32FC1); //Point can be saved into double[2]
+			float[] buff = new float[count];
+			for(int i=0; i<count; i++) {
+				float f = fs.get(i);
+				buff[i]   = f;
+			}
+			res.put(0, 0, buff);
+		} else {
+			res = new Mat();
+		}
+		return res;
 	}
 
 	public static void Mat_to_vector_float(Mat m, List<Float> fs) {
-		// TODO Auto-generated method stub
+		if(fs == null)
+			throw new java.lang.IllegalArgumentException();
+		int cols = m.cols();
+		if(!CvType.CV_32FC1.equals(m.type()) ||  m.rows()!=1 )
+			throw new java.lang.IllegalArgumentException();
+		
+		fs.clear();
+		float[] buff = new float[cols];
+		m.get(0, 0, buff);
+		for(int i=0; i<cols; i++) {
+			fs.add( new Float(buff[i]) );
+		}
 	}
 
 	public static Mat vector_uchar_to_Mat(List<Byte> bs) {
-		// TODO Auto-generated method stub
-		return null;
+		Mat res;
+		int count = (bs!=null) ? bs.size() : 0;
+		if(count>0){
+			res = new Mat(1, count, CvType.CV_8UC1); //Point can be saved into double[2]
+			byte[] buff = new byte[count];
+			for(int i=0; i<count; i++) {
+				byte b = bs.get(i);
+				buff[i]   = b;
+			}
+			res.put(0, 0, buff);
+		} else {
+			res = new Mat();
+		}
+		return res;
 	}
 
 	public static Mat vector_int_to_Mat(List<Integer> is) {
-		// TODO Auto-generated method stub
-		return null;
+		Mat res;
+		int count = (is!=null) ? is.size() : 0;
+		if(count>0){
+			res = new Mat(1, count, CvType.CV_32SC1); //Point can be saved into double[2]
+			int[] buff = new int[count];
+			for(int i=0; i<count; i++) {
+				int v = is.get(i);
+				buff[i]   = v;
+			}
+			res.put(0, 0, buff);
+		} else {
+			res = new Mat();
+		}
+		return res;
 	}
 
 	public static void Mat_to_vector_int(Mat m, List<Integer> is) {
-		// TODO Auto-generated method stub
+		if(is == null)
+			throw new java.lang.IllegalArgumentException();
+		int cols = m.cols();
+		if(!CvType.CV_32SC1.equals(m.type()) ||  m.rows()!=1 )
+			throw new java.lang.IllegalArgumentException();
 		
+		is.clear();
+		int[] buff = new int[cols];
+		m.get(0, 0, buff);
+		for(int i=0; i<cols; i++) {
+			is.add( new Integer(buff[i]) );
+		}
 	}
 
 	public static Mat vector_Rect_to_Mat(List<Rect> rs) {
-		// TODO Auto-generated method stub
-		return null;
+		Mat res;
+		int count = (rs!=null) ? rs.size() : 0;
+		if(count>0){
+			res = new Mat(1, count, CvType.CV_32SC4); //Point can be saved into double[2]
+			int[] buff = new int[4*count];
+			for(int i=0; i<count; i++) {
+				Rect r = rs.get(i);
+				buff[4*i  ]   = r.x;
+				buff[4*i+1]   = r.y;
+				buff[4*i+2]   = r.width;
+				buff[4*i+3]   = r.height;
+			}
+			res.put(0, 0, buff);
+		} else {
+			res = new Mat();
+		}
+		return res;
 	}
 
 	public static void Mat_to_vector_Rect(Mat m, List<Rect> rs) {
-		// TODO Auto-generated method stub
+		if(rs == null)
+			throw new java.lang.IllegalArgumentException();
+		int cols = m.cols();
+		if(!CvType.CV_32SC4.equals(m.type()) ||  m.rows()!=1 )
+			throw new java.lang.IllegalArgumentException();
 		
+		rs.clear();
+		int[] buff = new int[4*cols];
+		m.get(0, 0, buff);
+		for(int i=0; i<cols; i++) {
+			rs.add( new Rect(buff[4*i], buff[4*i+1], buff[4*i+2], buff[4*i+3]) );
+		}
 	}
 
 	public static Mat vector_double_to_Mat(List<Double> ds) {
-		// TODO Auto-generated method stub
-		return null;
+		Mat res;
+		int count = (ds!=null) ? ds.size() : 0;
+		if(count>0){
+			res = new Mat(1, count, CvType.CV_64FC1); //Point can be saved into double[2]
+			double[] buff = new double[count];
+			for(int i=0; i<count; i++) {
+				double v = ds.get(i);
+				buff[i]   = v;
+			}
+			res.put(0, 0, buff);
+		} else {
+			res = new Mat();
+		}
+		return res;
 	}
 
 }