Static variables

A static variables value is the same for aALL instances of the class…
The static duckCount variable is initialized ONLY when the class is first loaded, NOT each time a new instance is made.

publi class DUCK {

 private int size;

 /**
 /* The static duckCount variable is initializes ONLY
 /* when the class is first loaded, NOT each time a new 
 /* instance is made
 **/
 private static int duckCount = 0;

 public Duck(){
  /**
  /* Now it will keep
  /* incrementing each time
  /* the Duck constructor runs,
  /* because duckCount is static
  /* and won't be reset to 0
  duckCount++;
 }

 public void setsSize(int a){
   size = a;
 }

 public int getSize(){
   return size;
 }
}