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**** JNA based Java API for Hunspell ***
This package contains the JNA based Java bindings for the Hunspell, see: and for details
on how these work.
This java wrapper lives at:
See this page for dictionaries:
* Building the native binaries
Before using the java API you must build some native binaries to include
in the jar, to make things easy I've included the binaries from the platforms
that I care about in native-lib.
The binaries in native-lib were built on the various platforms using the script, the source for the native libs is in native-src and
consists of an unmodified hunspell source tar ball and any needed diffs.
I've included a script called which might help to build
on at least Linux and 32 bit OSX/windows, for 64 bit OSX/windows you
can take it as a hint of what to do.
Compiling libhunspell for 64 bit OSX is a pain, see readme-darwin-64bit.txt
for the changes that are needed to make it work.
Compiling libhunspell for 64 bit windows means having to change the vc project
to compile for the x64 platform.
* Building the Java API
To build hunspell.jar simply run "ant" this will produce
build/jar/hunspell.jar which contains everything a standalone application
could want (aside from jna.jar which can be found on the JNA page or in lib)
* Building the Java API for use via webstart
If you plan on using hunspell.jar from a webstart application run:
"ant webstart".
This will produce two native jar files per supported platform (one for JNA
and one for hunspell) as well as pure java jna-jws.jar and hunspell-jws.jar
in build/jar.
Include jna-jws.jar and hunspell-jws.jar in the common resources section in
normal jar tags, the platform specific binaries must go into platform specific
resource sections as nativelib entries.
* Working around a bug in nativelib handling of webstart
I had great trouble getting nativelib with more than one jar file to work on
osx and linux (it worked fine on windows), there are two workarounds:
1) Use plain <jar/> tags in stead of <nativelib/> this will cause both JNA and
hunspell to search the classpath for the needed binaries and they will then
extract the binaries and load them as usual.
This approach might leak a binary each run on windows because of
the mandatory file locking used on that platform.
2) Consolidate all your nativelib files for each platform into one.
This looks slightly less pretty, but it works and is slightly faster during
download as well.
* Output
The output of "ant" is one large jar file containing binaries for all the
supported platforms, it's about 800k, so it's not very nice for folks who
have to download it though:
hunspell.jar : The Java API + all binaries
hunspell-jws.jar : Just the Java API, for use in webstart.
hunspell-darwin-i386.jar : Binaries for use as OS specific resoruces
hunspell-darwin-ppc.jar :
hunspell-linux-amd64.jar :
hunspell-linux-i386.jar :
hunspell-win32-x86.jar :
I've parted out the lib/jna.jar file in the same manner, also for use in
jna-jws.jar : The Java API for JNA.
See for a very simple example of how to use the API, it
boils down to:
Hunspell.Dictionary dict =
if (dict.misspelled("wrod")) {
ArrayList<String> suggestions = dict.suggest("wrod");
IOW: The application must also supply the two dictionary files (.dic and .aff)
found in the zip file unzipped on disk and point at them using the full path
+ the part of the file name before .dic.
Hunspell.getInstance() caches the loaded hunspell library, so there is no
overhead in calling it more than once.
getDictionary() is also internally cached, so it costs no more than a hash
lookup when calling the second time.
* Testing
For a quick test of the JNA interface run
java -cp lib/jna.jar:build/jar/hunspell.jar \
-Droot=/path/to/your/dicts/ -Dlang=en_GB dk.dren.hunspell.HunspellMain
getDictionary() doesn't re-load the files once they are loaded, it should
probably do that automagically if it notices that the files have changed on
* Thanks
Although this code doesn't contain any, it's very much inspired by the JNA
bindings in OmegaT, so thank you to the OmegaT developers.
Andrzej Zydron figured out how to build libhunspell for 64 bit OSX.
* Misc
At the moment the package contains copies of:
* jna.jar version 3.4.0
* Hunspell version 1.3.2
Patches and suggestions are welcome.
Flemming Frandsen (flfr at stibo dot com / ff at nrvissing dot net)