package mpi.pt2pt; import mpi.* ; public class dacian_test {   public dacian_test(String[] args) {     MPI.Init(args);     int rank = MPI.COMM_WORLD.Rank() ;       if (rank == 0){      String[] msg = new String[10];       msg[0] = new String("Hello");      MPI.COMM_WORLD.Send(msg, 0, 1, MPI.OBJECT, 1, 13);    }else {      String[] message = new String[10];       MPI.COMM_WORLD.Recv(message, 0, 1, MPI.OBJECT, 0, 13);      System.out.println(message[0]);    }    MPI.Finalize() ;   }}