SWIG wrapped and manually wrapped functions in Java

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This example compares wrapping a c global function using the manual way and the SWIG way.

  • example.i. Interface file comparing code wrapped by SWIG and wrapped manually.
  • Sample Java program showing calls to both manually wrapped and SWIG wrapped c functions.


  • SWIG writes all the awkward JNI code for you. You just have to tell SWIG which functions to wrap.
  • If memory is allocated in c it needs to be free'd. A function, such as free(), can be provided with access from Java to free the memory.