jhc.java

public void testSnappyHappy() {
  Map snappy = null;
  Map happy = new HashMap();
 
  addToMap(snappy, "foo", "bar");
  addToMap(happy, "foo", "bar");
}
 
private Map addToMap(Map map, String key, String value){
  if (map == null){
    map = new HashMap();
  }
  map.put(key, value);
  return map;
}