How can I use javacpp reach the class like class #define XXX{}? - javacpp

Question

part of c++ code :
class CTB_DLL ctb::Terrain {
public:
/// Create an empty terrain object
Terrain();
/// Instantiate using terrain data on the file system
Terrain(const char *fileName);
/// Read terrain data from a file handle
Terrain(FILE *fp);
/// Read terrain data from the filesystem
void
readFile(const char *fileName);
/// Write terrain data to a file handle
void
writeFile(FILE *fp) const;
}
java code:
#Platform(include = "TerrainTile.hpp")
#Namespace("ctb")
public class TerrainTile {
public static class Terrain extends Pointer{
public Terrain() { allocate();}
public native void allocate();
public native void Terrain();
//to call the basic methods
/* public native void Terrain(Pointer filename);
public native void readFile(#Const Pointer filename);
public native void writeFile();*/
}
public static void main(String[] args) {
TerrainTile terrain = new TerrainTile();
}
}
when i using cmd : java -jar javacpp-1.5.5.jar TerrainTile.java
error occur:
Exception in thread "main" java.lang.ClassNotFoundException