diff --git a/Code/JavaWrappers/ExplicitBitVect.i b/Code/JavaWrappers/ExplicitBitVect.i
index b6d5b0230..2d33dbd03 100644
--- a/Code/JavaWrappers/ExplicitBitVect.i
+++ b/Code/JavaWrappers/ExplicitBitVect.i
@@ -43,6 +43,34 @@
 %ignore ExplicitBitVect::dp_bits;
 %ignore ExplicitBitVect::getOnBits (IntVect& v) const;
 %ignore ExplicitBitVect::ExplicitBitVect(unsigned int,bool);
+
+#ifdef SWIGJAVA
+
+%template(UChar_Vect) std::vector<unsigned char>;
+%typemap(jni) std::string ExplicitBitVect::toByteArray "jbyteArray"
+%typemap(jtype) std::string ExplicitBitVect::toByteArray "byte[]"
+%typemap(jstype) std::string ExplicitBitVect::toByteArray "byte[]"
+%typemap(javaout) std::string ExplicitBitVect::toByteArray {
+  return $jnicall;
+}
+%typemap(out) std::string ExplicitBitVect::toByteArray {
+  $result = JCALL1(NewByteArray, jenv, $1.size());
+  JCALL4(SetByteArrayRegion, jenv, $result, 0, $1.size(), (const jbyte*)$1.c_str());
+}
+
+#endif
+
+%typemap(javacode) ExplicitBitVect %{
+     public static ExplicitBitVect fromByteArray(byte[] fp) {
+     UChar_Vect vec = new UChar_Vect();
+     vec.reserve(fp.length);
+     for (int size=0;size<fp.length;++size) {
+       vec.add(fp[size]);
+     }
+     return new ExplicitBitVect(vec);
+   }
+%}
+
 %include <DataStructs/ExplicitBitVect.h>
 %newobject ExplicitBitVect::getOnBits;
 %extend ExplicitBitVect {
@@ -53,3 +81,18 @@
 	}
 }
 
+#ifdef SWIGJAVA
+
+%extend ExplicitBitVect {
+	const std::string toByteArray() {
+		return ($self)->toString();
+	}
+
+	ExplicitBitVect(const std::vector<unsigned char> & data ) {
+    	std::string str(data.begin(), data.end());
+    	return new ExplicitBitVect(str);
+  	}
+}
+
+#endif
+
diff --git a/Code/JavaWrappers/MorganFingerprints.i b/Code/JavaWrappers/MorganFingerprints.i
index f79c0b7fd..53b0bf218 100644
--- a/Code/JavaWrappers/MorganFingerprints.i
+++ b/Code/JavaWrappers/MorganFingerprints.i
@@ -62,5 +62,9 @@ SWIG_STD_VECTOR_SPECIALIZE_MINIMUM(UInt_Pair_Vect, std::vector< std::pair<unsign
 %template(TanimotoSimilaritySIVu32) RDKit::TanimotoSimilarity<boost::uint32_t>;
 %template(TanimotoSimilaritySIVi32) RDKit::TanimotoSimilarity<boost::int32_t>;
 %template(TanimotoSimilaritySIVi64) RDKit::TanimotoSimilarity<boost::int64_t>;
+%template(TverskySimilarity) RDKit::TverskySimilarity<boost::uint32_t>;
+%template(TverskySimilarity) RDKit::TverskySimilarity<boost::int32_t>;
+%template(TverskySimilarity) RDKit::TverskySimilarity<boost::int64_t>;
+
 
 %include "MorganFingerprints.h"
diff --git a/Code/JavaWrappers/gmwrapper/src-test/org/RDKit/FingerprintsTests.java b/Code/JavaWrappers/gmwrapper/src-test/org/RDKit/FingerprintsTests.java
index 7ebfea9a1..c1a06c23e 100644
--- a/Code/JavaWrappers/gmwrapper/src-test/org/RDKit/FingerprintsTests.java
+++ b/Code/JavaWrappers/gmwrapper/src-test/org/RDKit/FingerprintsTests.java
@@ -39,6 +39,7 @@ import org.junit.Test;
 public class FingerprintsTests extends GraphMolTest {
 
 	public void compareVectors(Int_Vect v1, Int_Vect v2) {
+		assertEquals(v1.size(), v2.size());
 		for (int i = 0; i < v1.size(); i++) {
 			assertEquals(v1.get(i),v2.get(i));
 		}
@@ -138,6 +139,18 @@ public class FingerprintsTests extends GraphMolTest {
 	}
 }
 
+    @Test
+    public void testToByteArray() {
+        String smiles = "Cc2nc1ccccc1o2";
+        ROMol mol = RWMol.MolFromSmiles(smiles);
+        ExplicitBitVect fp1 = RDKFuncs.PatternFingerprintMol(mol, 2048);
+        byte[] fpBytes = fp1.toByteArray();
+        ExplicitBitVect fp2 = ExplicitBitVect.fromByteArray(fpBytes);
+        Int_Vect fp1Bits = fp1.getOnBits();
+        Int_Vect fp2Bits = fp2.getOnBits();
+        compareVectors(fp1Bits, fp2Bits);
+    }
+
 	public static void main(String args[]) {
 		org.junit.runner.JUnitCore.main("org.RDKit.FingerprintsTests");
 	}