For System.loadLibrary() use the short name only, i.e. no path prefix
or dll extension, and make sure the file is in java.library.path or
your search PATH. For example:
System.loadLibrary("sampleDLL2");
For System.load(), specify the full path and filename. For example:
System.load("C:/sampleDLL2.dll");
System.loadLibrary() is the preferred mechanism.
推荐使用System.loadLibrary() 方式加载底层库。