diff --git a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Header.java b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Header.java
index a6305f1..4b73150 100644
--- a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Header.java
+++ b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Header.java
@@ -21,13 +21,13 @@ public class Header {
 
     public Header(byte[] buff) {
         assert buff.length >= 16;
-        version = LittleEndian.getInt2(buff, 0);
-        indexPolicy = LittleEndian.getInt2(buff, 2);
+        version = LittleEndian.getUint16(buff, 0);
+        indexPolicy = LittleEndian.getUint16(buff, 2);
         createdAt = LittleEndian.getUint32(buff, 4);
         startIndexPtr = LittleEndian.getUint32(buff, 8);
         endIndexPtr = LittleEndian.getUint32(buff, 12);
-        ipVersion = LittleEndian.getInt2(buff, 16);
-        runtimePtrBytes = LittleEndian.getInt2(buff, 18);
+        ipVersion = LittleEndian.getUint16(buff, 16);
+        runtimePtrBytes = LittleEndian.getUint16(buff, 18);
         buffer = buff;
     }
 
diff --git a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LittleEndian.java b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LittleEndian.java
index 2a8b7b0..06a223d 100644
--- a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LittleEndian.java
+++ b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LittleEndian.java
@@ -32,7 +32,7 @@ public class LittleEndian {
     }
 
     // put a 2-bytes int to the buffer from the specified offset
-    public static void putInt2(final byte[] buff, int offset, int value) {
+    public static void putUint16(final byte[] buff, int offset, int value) {
         buff[offset++] = (byte) (value & 0xFF);
         buff[offset  ] = (byte) ((value >>  8) & 0xFF);
     }
@@ -48,7 +48,7 @@ public class LittleEndian {
     }
 
     // get an 2 bytes int from a byte array from the specified offset
-    public static int getInt2(final byte[] buff, int offset) {
+    public static int getUint16(final byte[] buff, int offset) {
         return (
             ((buff[offset++]) & 0x000000FF) |
             ((buff[offset  ] << 8) & 0x0000FF00)
diff --git a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LongByteArray.java b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LongByteArray.java
index 3fb2a07..1d41219 100644
--- a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LongByteArray.java
+++ b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/LongByteArray.java
@@ -114,7 +114,7 @@ public class LongByteArray {
     public int getInt2(long offset) {
         final byte[] b = new byte[4];
         copy(offset, b, 0, 4);
-        return LittleEndian.getInt2(b, 0);
+        return LittleEndian.getUint16(b, 0);
     }
 
     // position entry class
diff --git a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Searcher.java b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Searcher.java
index 68264a8..dbae4de 100644
--- a/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Searcher.java
+++ b/binding/java/src/main/java/org/lionsoul/ip2region/xdb/Searcher.java
@@ -137,7 +137,7 @@ public class Searcher {
             } else if (version.ipSubCompare(ip, buff, bytes) > 0) {
                 l = m + 1;
             } else {
-                dataLen = LittleEndian.getInt2(buff, dBytes);
+                dataLen = LittleEndian.getUint16(buff, dBytes);
                 dataPtr = LittleEndian.getUint32(buff, dBytes + 2);
                 break;
             }
diff --git a/binding/java/src/test/java/org/lionsoul/ip2region/xdb/LittleEndianTest.java b/binding/java/src/test/java/org/lionsoul/ip2region/xdb/LittleEndianTest.java
index 9b216a3..7132c7d 100644
--- a/binding/java/src/test/java/org/lionsoul/ip2region/xdb/LittleEndianTest.java
+++ b/binding/java/src/test/java/org/lionsoul/ip2region/xdb/LittleEndianTest.java
@@ -18,18 +18,18 @@ public class LittleEndianTest {
         LittleEndian.put(buff, 4, 2L, 4);
 
         // putUint32
-        LittleEndian.putInt2(buff, 8, 24);
+        LittleEndian.putUint16(buff, 8, 24);
         LittleEndian.putUint32(buff, 10, 1024L);
 
         // decode
         assertEquals(LittleEndian.getUint32(buff, 0), 1);
         assertEquals(LittleEndian.getUint32(buff, 4), 2);
-        assertEquals(LittleEndian.getInt2(buff, 8), 24);
+        assertEquals(LittleEndian.getUint16(buff, 8), 24);
         assertEquals(LittleEndian.getUint32(buff, 10), 1024);
 
         log.debugf("uint32(buff, 0): %d", LittleEndian.getUint32(buff, 0));
         log.debugf("uint32(buff, 4): %d", LittleEndian.getUint32(buff, 4));
-        log.debugf("int2(buff, 8): %d", LittleEndian.getInt2(buff, 8));
+        log.debugf("int2(buff, 8): %d", LittleEndian.getUint16(buff, 8));
         log.debugf("uint32(buff, 10): %d", LittleEndian.getUint32(buff, 10));
     }