Unsatisfied Link Error when using System.loadLibrary()?

Question

For some reason, I'm getting a pesky Unsatisfied Link Error in my java app.

This is the offender in question:

System.loadLibrary("psjw");

Despite the library psjw.dll clearly being in the same source package as this class.

Please help.

Answer 1

Make sure the psjw.dll is either on your PATH or java.library.path.

Ex: psjw.dll may be in /usr/lib then your command would be java -Djava.library.path=/usr/lib ur.package.UrClass

Test your setup using a stripped down class:

public class TestLoadLibrary {

    public static void main(String[] args) {

        String libPath = System.getProperty("java.library.path");
        System.out.println("java.library.path=" + libPath);

        String libraryName = "psjw";
        System.out.println("Trying to load '" + libraryName + "'");
        System.loadLibrary(libraryName);
    }
}

Answer 2

Try to set explicity the library path when starting the JVM: -Djava.library.path="Directory of DLL"