i have a problem with my code.pls help me

i faced some problem in my matrices program.have anyone help me up.i really do appreciate him.thanks

public class matriceImpl
    extends
      java.rmi.server.UnicastRemoteObject
    implements matrice {
    public matriceImpl()
        throws java.rmi.RemoteException {
        super();
    }
  static int [][] mult(int [][] A,int [][] B) throws java.rmi.RemoteException
      {
      int d1 = A.length;
      int d2 = A[0].length;
      int [][] C= new int [d1][d2];
      for (int i=0;i<d1;i++ );
          for (int j=0;j<d2;j++ );
               for (int k=0;k<A.length;k++ );
      C[i][j]=A[i][k]*B[k][j];
      return C;
 }
 public static int [][] add(int [][] A,int [][] B) throws java.rmi.RemoteException
      {
     int d1 = A.length;
      int d2 = A[0].length;
      int [][] C= new int [d1][d2];
      for (int i=0;i<d1;i++ );
          for (int j=0;j<d2;j++ );
     C[i][j]=A[i][j]+B[i][j];
      return C;
 }
  public static int [][] prod(int [][] A,int [][] B) throws java.rmi.RemoteException
       {
     int d1 = A.length;
      int d2 = A[0].length;
      int [][] C= new int [d1][d2];
      for (int i=0;i<d1;i++ );
          for (int j=0;j<d2;j++ );
     C[i][j]=A[i][j]*B[i][j];
      return C;
 }
}