java - check whether a library has already been loaded with System.load(...) -

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in java program, loaded library built native code by:

system.load(path_to_lib_file);

i wondering in java, how check whether specific library has been loaded before execute above code?

you have few options, load in singleton. can take advantage of single instance-ness of singleton ensure library loaded once. similarly, have boolean flag , check (default false) - if it's true library has been loaded, otherwise load library , set flag true. there other options, none elegant (imo). example, place load call in static initializer block in class, long don't serialize instances of class should ensure library loaded once.


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