change gradlew to gradle and delete something unused code

mindspore/lite/java/java/app/build.gradle

@@ -4,7 +4,6 @@ apply plugin: 'maven-publish'
 android {
     compileSdkVersion 30
     buildToolsVersion "30.0.1"
-
     defaultConfig {
         minSdkVersion 19
         targetSdkVersion 30

mindspore/lite/java/java/app/src/main/java/com/mindspore/lite/DataType.java

@@ -32,6 +32,4 @@ public class DataType {
     public static final int kNumberTypeFloat16 = 42;
     public static final int kNumberTypeFloat32 = 43;
     public static final int kNumberTypeFloat64 = 44;
-
-    public static native int elementSize(int elementType);
 }

mindspore/lite/java/java/app/src/main/java/com/mindspore/lite/LiteSession.java

@@ -132,7 +132,7 @@ public class LiteSession {
 
     private native List<Long> getInputs(long sessionPtr);
 
-    private native Long getInputsByTensorName(long sessionPtr, String tensorName);
+    private native long getInputsByTensorName(long sessionPtr, String tensorName);
 
     private native List<Long> getOutputsByNodeName(long sessionPtr, String nodeName);
 
@@ -140,7 +140,7 @@ public class LiteSession {
 
     private native List<String> getOutputTensorNames(long sessionPtr);
 
-    private native Long getOutputByTensorName(long sessionPtr, String tensorName);
+    private native long getOutputByTensorName(long sessionPtr, String tensorName);
 
     private native void free(long sessionPtr);
 

mindspore/lite/java/java/app/src/main/native/CMakeLists.txt

@@ -1,5 +1,5 @@
-cmake_minimum_required(VERSION 3.14)
-project (Lite-java)
+cmake_minimum_required(VERSION 3.10)
+project(Lite-java)
 
 set(BUILD_LITE "on")
 set(PLATFORM_ARM "on")
@@ -31,7 +31,7 @@ include(${TOP_DIR}/cmake/external_libs/flatbuffers.cmake)
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 include_directories(${LITE_DIR})  ## lite include
 include_directories(${TOP_DIR}/mindspore/core/) ## core include
-include_directories(${LITE_DIR}/build)
+include_directories(${LITE_DIR}/build) ## flatbuffers
 
 link_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../../libs/${ANDROID_ABI}/)
 
@@ -46,4 +46,4 @@ add_library(mindspore-lite-jni SHARED
 
 find_library(log-lib log)
 
-target_link_libraries(mindspore-lite-jni mindspore-lite ${log-lib} )
+target_link_libraries(mindspore-lite-jni mindspore-lite ${log-lib})

mindspore/lite/java/java/app/src/main/native/runtime/version.cpp

@@ -18,6 +18,6 @@
 #include "common/ms_log.h"
 #include "include/version.h"
 
-extern "C" JNIEXPORT jstring JNICALL Java_com_mindspore_lite_Version_version(JNIEnv *env, jobject thiz) {
+extern "C" JNIEXPORT jstring JNICALL Java_com_mindspore_lite_Version_version(JNIEnv *env, jclass thiz) {
   return env->NewStringUTF(mindspore::lite::Version().c_str());
 }