diff --git a/check_env_demo/code/native-lib.cpp b/check_env_demo/code/native-lib.cpp
index 1cb3958..d4636e0 100755
--- a/check_env_demo/code/native-lib.cpp
+++ b/check_env_demo/code/native-lib.cpp
@@ -7,7 +7,6 @@
 
 extern "C" JNIEXPORT jint JNICALL
 Java_check_env_MainActivity_isPathReallyExist(JNIEnv *env, jobject, jstring path) {
-    const char *cpath = env->GetStringUTFChars(path, nullptr);
-    int result1 = syscall(__NR_faccessat,AT_FDCWD, cpath, F_OK, 0);
-    return result1;
-}
\ No newline at end of file
+    public int isPathReallyExist(String path) {
+    return new File(path).exists() ? 1 : 0;
+    }