diff --git a/src/secp256k1/src/java/org/bitcoin/NativeSecp256k1Test.java b/src/secp256k1/src/java/org/bitcoin/NativeSecp256k1Test.java
--- a/src/secp256k1/src/java/org/bitcoin/NativeSecp256k1Test.java
+++ b/src/secp256k1/src/java/org/bitcoin/NativeSecp256k1Test.java
@@ -13,11 +13,13 @@
      * This tests verify() for a valid signature
      */
     public static void testVerifyPos() throws AssertFailException{
+        boolean result = false;
+
         byte[] data = DatatypeConverter.parseHexBinary("CF80CD8AED482D5D1527D7DC72FCEFF84E6326592848447D2DC0B0E87DFC9A90"); //sha256hash of "testing"
         byte[] sig = DatatypeConverter.parseHexBinary("3044022079BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F817980220294F14E883B3F525B5367756C2A11EF6CF84B730B36C17CB0C56F0AAB2C98589");
         byte[] pub = DatatypeConverter.parseHexBinary("040A629506E1B65CD9D2E0BA9C75DF9C4FED0DB16DC9625ED14397F0AFC836FAE595DC53F8B0EFE61E703075BD9B143BAC75EC0E19F82A2208CAEB32BE53414C40");
 
-        boolean result = NativeSecp256k1.verify( data, sig, pub);
+        result = NativeSecp256k1.verify( data, sig, pub);
         assertEquals( result, true , "testVerifyPos");
     }
 
@@ -25,11 +27,13 @@
      * This tests verify() for a non-valid signature
      */
     public static void testVerifyNeg() throws AssertFailException{
+        boolean result = false;
+
         byte[] data = DatatypeConverter.parseHexBinary("CF80CD8AED482D5D1527D7DC72FCEFF84E6326592848447D2DC0B0E87DFC9A91"); //sha256hash of "testing"
         byte[] sig = DatatypeConverter.parseHexBinary("3044022079BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F817980220294F14E883B3F525B5367756C2A11EF6CF84B730B36C17CB0C56F0AAB2C98589");
         byte[] pub = DatatypeConverter.parseHexBinary("040A629506E1B65CD9D2E0BA9C75DF9C4FED0DB16DC9625ED14397F0AFC836FAE595DC53F8B0EFE61E703075BD9B143BAC75EC0E19F82A2208CAEB32BE53414C40");
 
-        boolean result = NativeSecp256k1.verify( data, sig, pub);
+        result = NativeSecp256k1.verify( data, sig, pub);
         //System.out.println(" TEST " + new BigInteger(1, resultbytes).toString(16));
         assertEquals( result, false , "testVerifyNeg");
     }
@@ -38,9 +42,11 @@
      * This tests secret key verify() for a valid secretkey
      */
     public static void testSecKeyVerifyPos() throws AssertFailException{
+        boolean result = false;
+
         byte[] sec = DatatypeConverter.parseHexBinary("67E56582298859DDAE725F972992A07C6C4FB9F62A8FFF58CE3CA926A1063530");
 
-        boolean result = NativeSecp256k1.secKeyVerify( sec );
+        result = NativeSecp256k1.secKeyVerify( sec );
         //System.out.println(" TEST " + new BigInteger(1, resultbytes).toString(16));
         assertEquals( result, true , "testSecKeyVerifyPos");
     }
@@ -49,9 +55,11 @@
      * This tests secret key verify() for an invalid secretkey
      */
     public static void testSecKeyVerifyNeg() throws AssertFailException{
+        boolean result = false;
+
         byte[] sec = DatatypeConverter.parseHexBinary("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
 
-        boolean result = NativeSecp256k1.secKeyVerify( sec );
+        result = NativeSecp256k1.secKeyVerify( sec );
         //System.out.println(" TEST " + new BigInteger(1, resultbytes).toString(16));
         assertEquals( result, false , "testSecKeyVerifyNeg");
     }
@@ -63,7 +71,7 @@
         byte[] sec = DatatypeConverter.parseHexBinary("67E56582298859DDAE725F972992A07C6C4FB9F62A8FFF58CE3CA926A1063530");
 
         byte[] resultArr = NativeSecp256k1.computePubkey( sec);
-        String pubkeyString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String pubkeyString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( pubkeyString , "04C591A8FF19AC9C4E4E5793673B83123437E975285E7B442F4EE2654DFFCA5E2D2103ED494718C697AC9AEBCFD19612E224DB46661011863ED2FC54E71861E2A6" , "testPubKeyCreatePos");
     }
 
@@ -74,7 +82,7 @@
         byte[] sec = DatatypeConverter.parseHexBinary("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
 
         byte[] resultArr = NativeSecp256k1.computePubkey( sec);
-        String pubkeyString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String pubkeyString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( pubkeyString, "" , "testPubKeyCreateNeg");
     }
 
@@ -87,7 +95,7 @@
         byte[] sec = DatatypeConverter.parseHexBinary("67E56582298859DDAE725F972992A07C6C4FB9F62A8FFF58CE3CA926A1063530");
 
         byte[] resultArr = NativeSecp256k1.sign(data, sec);
-        String sigString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String sigString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( sigString, "3045022100F51D069AA46EDB4E2E77773FE364AA2AF6818AF733EA542CFC4D546640A58D8802204F1C442AC9F26F232451A0C3EE99F6875353FC73902C68055C19E31624F687CC" , "testSignPos");
     }
 
@@ -99,7 +107,7 @@
         byte[] sec = DatatypeConverter.parseHexBinary("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
 
         byte[] resultArr = NativeSecp256k1.sign(data, sec);
-        String sigString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String sigString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( sigString, "" , "testSignNeg");
     }
 
@@ -111,7 +119,7 @@
         byte[] data = DatatypeConverter.parseHexBinary("3982F19BEF1615BCCFBB05E321C10E1D4CBA3DF0E841C2E41EEB6016347653C3"); //sha256hash of "tweak"
 
         byte[] resultArr = NativeSecp256k1.privKeyTweakAdd( sec , data );
-        String sigString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String sigString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( sigString , "A168571E189E6F9A7E2D657A4B53AE99B909F7E712D1C23CED28093CD57C88F3" , "testPrivKeyAdd_1");
     }
 
@@ -123,7 +131,7 @@
         byte[] data = DatatypeConverter.parseHexBinary("3982F19BEF1615BCCFBB05E321C10E1D4CBA3DF0E841C2E41EEB6016347653C3"); //sha256hash of "tweak"
 
         byte[] resultArr = NativeSecp256k1.privKeyTweakMul( sec , data );
-        String sigString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String sigString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( sigString , "97F8184235F101550F3C71C927507651BD3F1CDB4A5A33B8986ACF0DEE20FFFC" , "testPrivKeyMul_1");
     }
 
@@ -135,7 +143,7 @@
         byte[] data = DatatypeConverter.parseHexBinary("3982F19BEF1615BCCFBB05E321C10E1D4CBA3DF0E841C2E41EEB6016347653C3"); //sha256hash of "tweak"
 
         byte[] resultArr = NativeSecp256k1.pubKeyTweakAdd( pub , data );
-        String sigString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String sigString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( sigString , "0411C6790F4B663CCE607BAAE08C43557EDC1A4D11D88DFCB3D841D0C6A941AF525A268E2A863C148555C48FB5FBA368E88718A46E205FABC3DBA2CCFFAB0796EF" , "testPrivKeyAdd_2");
     }
 
@@ -147,7 +155,7 @@
         byte[] data = DatatypeConverter.parseHexBinary("3982F19BEF1615BCCFBB05E321C10E1D4CBA3DF0E841C2E41EEB6016347653C3"); //sha256hash of "tweak"
 
         byte[] resultArr = NativeSecp256k1.pubKeyTweakMul( pub , data );
-        String sigString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String sigString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( sigString , "04E0FE6FE55EBCA626B98A807F6CAF654139E14E5E3698F01A9A658E21DC1D2791EC060D4F412A794D5370F672BC94B722640B5F76914151CFCA6E712CA48CC589" , "testPrivKeyMul_2");
     }
 
@@ -166,7 +174,7 @@
         byte[] pub = DatatypeConverter.parseHexBinary("040A629506E1B65CD9D2E0BA9C75DF9C4FED0DB16DC9625ED14397F0AFC836FAE595DC53F8B0EFE61E703075BD9B143BAC75EC0E19F82A2208CAEB32BE53414C40");
 
         byte[] resultArr = NativeSecp256k1.createECDHSecret(sec, pub);
-        String ecdhString = javax.xml.bind.DatatypeConverter.printHexBinary(resultArr);
+        String ecdhString = DatatypeConverter.printHexBinary(resultArr);
         assertEquals( ecdhString, "2A2A67007A926E6594AF3EB564FC74005B37A9C8AEF2033C4552051B5C87F043" , "testCreateECDHSecret");
     }