Ex:  A vector V is known to contain only Float's.  Find the sum.

Vector V;

  :

  :

  put Floats into V

float sum = 0;

Enumeration e = V.elements();

while( e.hasMoreElements() )

  {

  sum += ((Float)e.nextElement()).floatValue();

  }          

//sum contains total

for( Enumeration e = V.elements(); 

     e.hasMoreElements();        )

  {

  sum += ((Float)e.nextElement()).floatValue();

  }