Androiod, openGL, and 3 dimensional vectors

Question

Hi,
I am learning java for the android phones. I got to a part in my book that deals very lightly with 3d graphics(OpenGL) and I am trying to convert some code from DirectX. The problem I am having is finding the equivalent of a 3 dimensional Vector in
the subset of java for the android platform. An example would be converting these vectors to their equivalent in the Android platform and java code:
        public Vector3 Position;
        public Vector3 Normal;
        public Vector3 Tangent;
        public Vector2 TextureCoordinate;What are the equivalents in java and the android platform?
Thanks in advance for help with this.

Answer 1

Just as a Vector can be used instead of a single dimension array, a Vector containing Vector objects can be used instead of a 2 dimensional array.
So in your example ...
Vector rowVector = new Vector();
while(myresultset.next()) {
ResultSetMetaData rsmd=myresultset.getMetaData();
int numOfColumns=rsmd.getColumnCount();
Vector columnVector = new Vector();
for(int columnCtr=0; columnCtr<numOfColumns; columnCtr++) {
columnVector.add(myresultset.getString(columnCtr+1));
rowVector.add(columnVector);
int numberOfRows = rowVector.size();
int numberOfColumnsInRow1 = ((Vector)rowVector.get(0)).size();
String column3ForRow1 = (numberOfColumnsInRow1 >= 3) ? (String)((Vector)rowVector.get(0)).get(2) : null;