diff --git a/build.sh b/build.sh
index 774411b9..bbe2049c 100755
--- a/build.sh
+++ b/build.sh
@@ -522,7 +522,7 @@ host-jar()
     cp -f $CACHE_DIR/lib/libzt.* $JAVA_JAR_DIR
     cd $JAVA_JAR_DIR
     export JAVA_TOOL_OPTIONS=-Dfile.encoding=UTF8
-    javac -Xlint:deprecation com/zerotier/sockets/*.java
+    javac -Xlint:all com/zerotier/sockets/*.java
 
     jar cf libzt-$PKG_VERSION.jar $SHARED_LIB_NAME com/zerotier/sockets/*.class
     rm -rf com $SHARED_LIB_NAME
diff --git a/src/bindings/java/com/zerotier/sockets/ZeroTierNative.java b/src/bindings/java/com/zerotier/sockets/ZeroTierNative.java
index 92053156..aa797117 100644
--- a/src/bindings/java/com/zerotier/sockets/ZeroTierNative.java
+++ b/src/bindings/java/com/zerotier/sockets/ZeroTierNative.java
@@ -228,7 +228,7 @@ public class ZeroTierNative {
     public static int ZTS_SO_DONTROUTE = 0x00000010;     // NOT YET SUPPORTED
     public static int ZTS_SO_USELOOPBACK = 0x00000040;   // NOT YET SUPPORTED
     public static int ZTS_SO_LINGER = 0x00000080;
-    public static int ZTS_SO_DONTLINGER = ((int)(~ZTS_SO_LINGER));
+    public static int ZTS_SO_DONTLINGER = (~ZTS_SO_LINGER);
     public static int ZTS_SO_OOBINLINE = 0x00000100;   // NOT YET SUPPORTED
     public static int ZTS_SO_REUSEPORT = 0x00000200;   // NOT YET SUPPORTED
     public static int ZTS_SO_SNDBUF = 0x00001001;      // NOT YET SUPPORTED