code: public float getTexCoordU(int vertex, int coords) {
          if (!hasTexCoords(coords)) {
              throw new IllegalStateException(
                      "mesh has no texture coordinate set " + coords);
          }
          
          checkVertexIndexBounds(vertex);
          /* bound checks for coords are done by java for us */
          
          return m_texcoords[coords].getFloat(
                  vertex * m_numUVComponents[coords] * SIZEOF_FLOAT);
      }
docs: Returns the u component of a coordinate from a texture coordinate set.
  
  @param vertex the vertex index
  @param coords the texture coordinate set
  @return the u component