public class Datatype { // Derived datatypes public static Datatype Contiguous(int count, Datatype oldtype) throws MPIException {...} public static Datatype Vector(int count, int blocklength, int stride, Datatype oldtype) throws MPIException {...} public static Datatype Hvector(int count, int blocklength, int stride, Datatype oldtype) throws MPIException {...} public static Datatype Indexed(int [] array_of_blocklengths, int [] array_of_displacements, Datatype oldtype) throws MPIException {...} public static Datatype Hindexed(int [] array_of_blocklengths, int [] array_of_displacements, Datatype oldtype) throws MPIException {...} public static Datatype Struct(int [] array_of_blocklengths, int [] array_of_displacements, Datatype [] array_of_types) throws MPIException {...} public int Extent() throws MPIException {...} public int Lb() throws MPIException {...} public int Ub() throws MPIException {...} public int Size() throws MPIException {...} public void Commit() throws MPIException {...} public void finalize() throws MPIException {...} ... }