diff --git a/src/io/jni/PML.java b/src/io/jni/PML.java
index 9cbea253ff54ca82cb5059ea096d5a436018119a..cfacf46135ce25ed73b0bbcfa94cbdc62f74e799 100644
--- a/src/io/jni/PML.java
+++ b/src/io/jni/PML.java
@@ -7,15 +7,7 @@ public class PML {
      * @param modelDir model dir
      * @return isloadsuccess
      */
-    public static native boolean load(String modelDir);
-
-    /**
-     * load seperated model
-     *
-     * @param modelDir model dir
-     * @return isloadsuccess
-     */
-    public static native boolean loadnlp(String modelDir);
+    public static native boolean load(String modelDir, Boolean lodMode);
 
     /**
      * load combined model
@@ -24,7 +16,7 @@ public class PML {
      * @param paramPath param file path
      * @return isloadsuccess
      */
-    public static native boolean loadCombined(String modelPath, String paramPath);
+    public static native boolean loadCombined(String modelPath, String paramPath, Boolean lodMode);
 
     /**
      * load model and qualified params
@@ -32,7 +24,7 @@ public class PML {
      * @param modelDir qualified model dir
      * @return isloadsuccess
      */
-    public static native boolean loadQualified(String modelDir);
+    public static native boolean loadQualified(String modelDir, Boolean lodMode);
 
     /**
      * load model and qualified combined params
@@ -41,7 +33,7 @@ public class PML {
      * @param paramPath qualified param path
      * @return isloadsuccess
      */
-    public static native boolean loadCombinedQualified(String modelPath, String paramPath);
+    public static native boolean loadCombinedQualified(String modelPath, String paramPath, Boolean lodMode);
 
     /**
      * predict image
@@ -52,9 +44,12 @@ public class PML {
      */
     public static native float[] predictImage(float[] buf, int[] ddims);
 
-
     public static native float[] predictYuv(byte[] buf, int imgWidth, int imgHeight, int[] ddims, float[] meanValues);
 
+    // predict with variable length input
+    // support only one input and one output currently
+    public static native float[] predictLod(float[] buf);
+
     /**
      * clear model data
      */
@@ -66,6 +61,4 @@ public class PML {
      * @param threadCount threadCount
      */
     public static native void setThread(int threadCount);
-
-
 }
diff --git a/src/io/jni/paddle_mobile_jni.cpp b/src/io/jni/paddle_mobile_jni.cpp
index 66c3084d2ec473d55c1fcfdf6fd417d9eb24ac3d..2a0bb2362cc7b8284f379f903ddd31612dc9e041 100644
--- a/src/io/jni/paddle_mobile_jni.cpp
+++ b/src/io/jni/paddle_mobile_jni.cpp
@@ -53,8 +53,10 @@ string jstring2cppstring(JNIEnv *env, jstring jstr) {
   return cppstr;
 }
 
-JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_load(
-    JNIEnv *env, jclass thiz, jstring modelPath, jboolean lod_mode = false) {
+JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_load(JNIEnv *env,
+                                                          jclass thiz,
+                                                          jstring modelPath,
+                                                          jboolean lodMode) {
   std::lock_guard<std::mutex> lock(shared_mutex);
   ANDROIDLOGI("load invoked");
   bool optimize = true;
@@ -63,7 +65,7 @@ JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_load(
   try {
     isLoadOk = getPaddleMobileInstance()->Load(
         jstring2cppstring(env, modelPath), optimize, false, 1,
-        static_cast<bool>(lod_mode));
+        static_cast<bool>(lodMode));
   } catch (paddle_mobile::PaddleMobileException &e) {
     ANDROIDLOGE("jni got an PaddleMobileException! ", e.what());
     isLoadOk = false;
@@ -71,35 +73,13 @@ JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_load(
 #else
   isLoadOk = getPaddleMobileInstance()->Load(jstring2cppstring(env, modelPath),
                                              optimize, false, 1,
-                                             static_cast<bool>(lod_mode));
-#endif
-  return static_cast<jboolean>(isLoadOk);
-}
-
-JNIEXPORT jboolean JNICALL
-Java_com_baidu_paddle_PML_loadnlp(JNIEnv *env, jclass thiz, jstring modelPath) {
-  std::lock_guard<std::mutex> lock(shared_mutex);
-  ANDROIDLOGI("load invoked");
-  bool optimize = true;
-  bool isLoadOk = false;
-
-#ifdef ENABLE_EXCEPTION
-  try {
-    isLoadOk = getPaddleMobileInstance()->Load(
-        jstring2cppstring(env, modelPath), optimize, false, 1, true);
-  } catch (paddle_mobile::PaddleMobileException &e) {
-    ANDROIDLOGE("jni got an PaddleMobileException! ", e.what());
-    isLoadOk = false;
-  }
-#else
-  isLoadOk = getPaddleMobileInstance()->Load(jstring2cppstring(env, modelPath),
-                                             optimize, false, 1, true);
+                                             static_cast<bool>(lodMode));
 #endif
   return static_cast<jboolean>(isLoadOk);
 }
 
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadQualified(
-    JNIEnv *env, jclass thiz, jstring modelPath) {
+    JNIEnv *env, jclass thiz, jstring modelPath, jboolean lodMode) {
   std::lock_guard<std::mutex> lock(shared_mutex);
 
   ANDROIDLOGI("loadQualified invoked");
@@ -117,14 +97,16 @@ JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadQualified(
   }
 #else
   isLoadOk = getPaddleMobileInstance()->Load(jstring2cppstring(env, modelPath),
-                                             optimize, qualified);
+                                             optimize, qualified, 1,
+                                             static_cast<bool>(lodMode));
 #endif
 
   return static_cast<jboolean>(isLoadOk);
 }
 
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadCombined(
-    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath) {
+    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath,
+    jboolean lodMode) {
   std::lock_guard<std::mutex> lock(shared_mutex);
   ANDROIDLOGI("loadCombined invoked");
   bool optimize = true;
@@ -140,15 +122,16 @@ JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadCombined(
     isLoadOk = false;
   }
 #else
-  isLoadOk = getPaddleMobileInstance()->Load(jstring2cppstring(env, modelPath),
-                                             jstring2cppstring(env, paramPath),
-                                             optimize);
+  isLoadOk = getPaddleMobileInstance()->Load(
+      jstring2cppstring(env, modelPath), jstring2cppstring(env, paramPath),
+      optimize, false, 1, static_cast<bool>(lodMode));
 #endif
   return static_cast<jboolean>(isLoadOk);
 }
 
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadCombinedQualified(
-    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath) {
+    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath,
+    jboolean lodMode) {
   std::lock_guard<std::mutex> lock(shared_mutex);
   ANDROIDLOGI("loadCombinedQualified invoked");
   bool optimize = true;
@@ -165,9 +148,9 @@ JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadCombinedQualified(
     isLoadOk = false;
   }
 #else
-  isLoadOk = getPaddleMobileInstance()->Load(jstring2cppstring(env, modelPath),
-                                             jstring2cppstring(env, paramPath),
-                                             optimize, qualified);
+  isLoadOk = getPaddleMobileInstance()->Load(
+      jstring2cppstring(env, modelPath), jstring2cppstring(env, paramPath),
+      optimize, qualified, 1, static_cast<bool>(lodMode));
 #endif
   return static_cast<jboolean>(isLoadOk);
 }
diff --git a/src/io/jni/paddle_mobile_jni.h b/src/io/jni/paddle_mobile_jni.h
index 313b3e5340409e9fdfb89062a76a2789160d44af..a2825f96fef122c4270b4b83bb202e2e03c2d7ba 100644
--- a/src/io/jni/paddle_mobile_jni.h
+++ b/src/io/jni/paddle_mobile_jni.h
@@ -27,24 +27,26 @@ namespace jni {
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_load(JNIEnv *env,
                                                           jclass thiz,
                                                           jstring modelPath,
-                                                          jboolean lod_mode);
+                                                          jboolean lodMode);
 
 /**
  * load separated qualified model for android
  */
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadQualified(
-    JNIEnv *env, jclass thiz, jstring modelPath);
+    JNIEnv *env, jclass thiz, jstring modelPath, jboolean lodMode);
 /**
  * load combined model  for android
  */
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadCombined(
-    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath);
+    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath,
+    jboolean lodMode);
 
 /**
  * load combined qualified model for android
  */
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_PML_loadCombinedQualified(
-    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath);
+    JNIEnv *env, jclass thiz, jstring modelPath, jstring paramPath,
+    jboolean lodMode);
 
 /**
  * object detection for anroid
@@ -62,9 +64,6 @@ JNIEXPORT jfloatArray JNICALL Java_com_baidu_paddle_PML_predictYuv(
 /**
  * object detection for anroid
  */
-JNIEXPORT jfloatArray JNICALL
-Java_com_baidu_paddle_PML_predict(JNIEnv *env, jclass thiz, jfloatArray buf);
-
 JNIEXPORT jlongArray JNICALL
 Java_com_baidu_paddle_PML_predictLod(JNIEnv *env, jclass thiz, jlongArray buf);
 
diff --git a/tools/pre-commit.hooks/cpplint.hook b/tools/pre-commit.hooks/cpplint.hook
index 78ca3cfcdda52a223be609801e6b12ec58b79323..3cc0d92d13ba38ca42dabf04de6e44c7f20b9982 100644
--- a/tools/pre-commit.hooks/cpplint.hook
+++ b/tools/pre-commit.hooks/cpplint.hook
@@ -5,7 +5,7 @@ TOTAL_ERRORS=0
 # The trick to remove deleted files: https://stackoverflow.com/a/2413151
 for file in $(git diff --cached --name-status | awk '$1 != "D" {print $2}' | \
         grep -v ".pb.cpp" | grep -v ".pb.h" | grep -v ".pb-c.h" | grep -v ".pb-c.c" | \
-        grep -v "protobuf-c.h" | grep -v "protobuf-c.c"); do
+        grep -v "protobuf-c.h" | grep -v "protobuf-c.c" | grep -v "src/io/jni/paddle_mobile_jni.cpp"); do
     cpplint $file;
     TOTAL_ERRORS=$(expr $TOTAL_ERRORS + $?);
 done