/*---------------------------------

  Comparison.java

  (P) 1998 Laurentiu Cristofor

  definition
  of an abstract comparison object

-----------------------------------*/

abstract class Comparison
{
  // Contract:
  // val1 < val2  -> return <0
  // val1 == val2 -> return 0
  // val1 > val2  -> return >0
  abstract public int compare(Object val1, Object val2);
}