java - MPI Recv data getting corrupted -

i'm trying send number across using mpi, data getting corrupted. can't figure out why. code is:

import mpi.*;  public class test {     public static void main(string[] args) throws mpiexception{         mpi.init(args);         int rank = mpi.comm_world.rank();         int clustersize = mpi.comm_world.size();         int[] send = new int[1];         int[] recv = new int[1];         send[0] = 12387394;         if(rank == 0) {             mpi.comm_world.send(send[0], 0, 1, mpi.int, 1, 17);         } else {             mpi.comm_world.recv(recv, 0, 1, mpi.int, 0, 17);             system.out.println(recv[0]);         }         mpi.finalize();      } } 

the output 1. why that?

shouldn't pass whole array buffer instead of first value? mean:

mpi.comm_world.send(send, 0, 1, mpi.int, 1, 17);