UnsatisfiedLinkError while calling a JNI method

Hello world
I've been struggling with this problem for two weeks now. I have a third party SDK that provides JNI library, and all what I have to do is implement the SDK, loading the JNI library they provided and call the methods of the JNI. I was able to load JNI library and call the JNI methods when I do not have classes in the package successfully. But when I put the classes in a package, then the library gets loaded successfully but an unsatisfiedLinkError occurs when you call the JNI methods. Help, please! Do not forget that the JNI library is provided by the third party provider and I don't need to write C/C++ code or call javah to create a .h file and then a c / c ++.

This is the error I get:
Exception in thread "main" java.lang.UnsatisfiedLinkError: ss.tts.JNILayer.InitDFTTSEngineEx3 (ILjava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; [I [(I) V]
at ss.tts.JNILayer.InitDFTTSEngineEx3 (Native Method)
at ss.tts.Speech.test(Speech.java:854)
at ss.tts.SSMain.main(SSMain.java:13)

The three classes are SSMain, speech and JNILayer. JNILayer has the jni methods, speech calls the jni method and SSMain is the main class.
Thank you in advance.

whatever class that contains the method 'InitDFTTSEngineEx3 '. should not be changed, even the packaging must not be changed. [even for another class who said in them the native method]
because in the native code method NYI signatures will be based on the java class of the fully qualified name.
Thus, when you change the package of the FQN will change and not matching method for it

ss.tts.JNILayer.InitDFTTSEngineEx3 (ILjava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; Ljava/lang/String; [I [(I) V]

Can be found in native code.
I hope that you understood.

Tags: Java

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