diff --git a/examples/bindings/java/Makefile b/examples/bindings/java/Makefile
index 38849e1..04d244d 100644
--- a/examples/bindings/java/Makefile
+++ b/examples/bindings/java/Makefile
@@ -15,7 +15,7 @@ example_java_app_1.6:
 	javac -source 1.6 -bootclasspath /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.41.x86_64/jre/lib/rt.jar -target 1.6 *.java
 
 copy_dynamic_lib:
-	cp ../../../$(BUILD)/$(SHARED_LIB) .
+	cp ../../../bin/lib/$(SHARED_LIB) .
 
 jar:
 	jar cf libzt.jar libzt.dylib zerotier/ZeroTier.class
diff --git a/examples/bindings/java/README.md b/examples/bindings/java/README.md
index dc6773f..0dcbda6 100644
--- a/examples/bindings/java/README.md
+++ b/examples/bindings/java/README.md
@@ -11,7 +11,8 @@
 ### JAR file (with embedded C++ dynamic library)
 
 ```
-make example_app
+make example_java_app
+make copy_dynamic_lib
 make jar
 ```
 
diff --git a/src/libztJNI.cpp b/src/libztJNI.cpp
index 8f6d33b..1ba63ab 100644
--- a/src/libztJNI.cpp
+++ b/src/libztJNI.cpp
@@ -27,7 +27,7 @@
 /**
  * @file
  *
- * Javs JNI wrapper for partially-POSIX-compliant socket API
+ * Javs JNI wrapper for POSIX-like socket API
  * JNI naming convention: Java_PACKAGENAME_CLASSNAME_METHODNAME
  */
 
@@ -200,7 +200,8 @@ namespace ZeroTier {
 			return -1; // possibly invalid address format
 			// TODO: set errno
 		}
-		return zts_connect(fd, (struct sockaddr *)&ss, sizeof(struct sockaddr_storage));
+		socklen_t addrlen = ss.ss_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
+		return zts_connect(fd, (struct sockaddr *)&ss, addrlen);
 	}
 
 	JNIEXPORT jint JNICALL Java_zerotier_ZeroTier_bind(
@@ -213,7 +214,7 @@ namespace ZeroTier {
 			// TODO: set errno
 		}
 		//DEBUG_TEST("RESULT => %s : %d", inet_ntoa(in4->sin_addr), ntohs(in4->sin_port));
-		socklen_t addrlen = ss.ss_family == AF_INET ? 4 : 16;
+		socklen_t addrlen = ss.ss_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
 		err = zts_bind(fd, (struct sockaddr*)&ss, addrlen);
 		return err;
 	}
@@ -383,7 +384,7 @@ namespace ZeroTier {
 		jint fd, jarray buf, jint len)
 	{
 		jbyte *body = (*env).GetByteArrayElements((_jbyteArray *)buf, 0);
-		int read_bytes = read(fd, body, len);
+		int read_bytes = zts_read(fd, body, len);
 		(*env).ReleaseByteArrayElements((_jbyteArray *)buf, body, 0);
 		return read_bytes;
 	}