class MultiplicationRecursive {

   static int multiplication( int i, int j ) {
      // ASSERT i,j >=0 ;
      if ( i==0 ) return 0 ;
      return j + multiplication( i-1, j ) ;
   }

   public static void main( String [] args ) {
      int a = 3 ;
      int b = 4 ;
      System.out.println(a+" * "+b+" = "+multiplication(a,b)) ; 
   }

}