[测试通过]JAVA调用第三方DLL的简单方法：JNA及DEMO

// mathfundll.java import com.sun.jna.*; import com.sun.jna.win32.*; import com.sun.jna.Structure; import com.sun.jna.win32.StdCallLibrary; import java.util.*; public interface mathfundll extends StdCallLibrary{ /* public static class SYSTEMTIME extends Structure { //abstract public short wYear; public short wMonth; public short wDayOfWeek; public short wDay; public short wHour; public short wMinute; public short wSecond; public short wMilliseconds; @Override protected List getFieldOrder() { List a = new ArrayList(); a.add("wYear"); a.add("wMonth"); a.add("wDayOfWeek"); a.add("wDay"); a.add("wHour"); a.add("wMinute"); a.add("wSecond"); a.add("wMilliseconds"); return a; } } */ //void GetLocalTime (SYSTEMTIME result); double Add(double a, double b); double Subtract(double a, double b); double Multiply(double a, double b); double Divide(double a, double b); }