@INPROCEEDINGS{Grichi19-CASCON-StateofJNI,
   AUTHOR       = {Manel Grichi and Mouna Abidi and Yann-Ga�l Gu�h�neuc and 
      Foutse Khomh},
   BOOKTITLE    = {Proceedings of the 29<sup>th</sup> IBM Centers for Advanced Studies Conference (CASCON)},
   TITLE        = {State of Practices of Java Native Interface},
   YEAR         = {2019},
   OPTADDRESS   = {},
   OPTCROSSREF  = {},
   EDITOR       = {Kostas Kontogiannis and Robert Enenkel},
   MONTH        = {October},
   NOTE         = {15 pages.},
   OPTNUMBER    = {},
   OPTORGANIZATION = {},
   PAGES        = {274--283},
   PUBLISHER    = {ACM Press},
   OPTSERIES    = {},
   OPTVOLUME    = {},
   KEYWORDS     = {Topic: <b>Evolution patterns</b>, Venue: <i>CASCON</i>},
   ABSTRACT     = {The use of the Java Native Interface (JNI) allows taking 
      advantage of the existing libraries written in different programming 
      languages for code reuse, performance, and security. Despite the 
      importance of JNI in development, practices on its usages are not 
      well studied yet. In this paper, we investigated the usage of JNI in 
      100 open source systems collected from OpenHub and Github, around 8k 
      of source code files combined between Java and C/C++, including the 
      Java class libraries part of the JDK v9. We identified the state of 
      the practice in JNI systems by semi-automatically and manually 
      analyzing the source code. Our qualitative analysis shows eleven JNI 
      practices where they are mainly related to loading libraries, 
      implementing native methods, exception management, return types, and 
      local/global references management. Basing on our findings, we 
      provided some suggestions and recommendations to developers to 
      facilitate the debugging tasks of JNI in multi-language systems, 
      which can also help them to deal with the Java and C memory.}
}

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