call c++ function from java without changing c++ code

Question

I want to use some .cpp class and methods in my java program. For example, I have p1.java that calls method1. method1 is available in p2.cpp and p2.cpp includes p3.cpp. I don't want to change cpp codes...

Is it possible? (and I need .cpp and .header both.)

And is there any alternative better solution? (except java native interface)?

Andreas · Accepted Answer · 2016-06-02 09:27:39Z

2

Why don't you create an extra layer between Java and C++ with JNI - effectively you create:

method1_java_cpp_layer( JNIEnv * e, jobject o )
{
    extracted_information = extract_information( e, o );
    method1( extracted_information )
}

And this goes into "java_cpp_layer.cpp".

edited Jun 2, 2016 at 9:27

Andreas

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answered Jun 2, 2016 at 9:23

ran

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1 Comment

faraa Over a year ago

Thank's... . I did that. But now when i run program(java java_cpp_layer) I get another error:libjava_cpp_layer.so: undefined symbol: p2 ...Can you help me?

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