1  
   2      public void dumpMapOfMap(Map map) {
   3          Set s = map.entrySet();
   4          Iterator sit = s.iterator();
   5          boolean isFirst = true;
   6  
   7          while (sit.hasNext()) {
   8              Map.Entry elem = (Map.Entry)sit.next();
   9              String key = (String)elem.getKey();
  10              Object value = elem.getValue();
  11  
  12              if (value instanceof String) {
  13                  // recursivity stop condition
  14                  System.out.print(key);
  15                  System.out.print(" : ");
  16                  System.out.println(value);
  17              } else {
  18                  if (!isFirst) {
  19                      System.out.println("");
  20                  } else {
  21                      isFirst = false;
  22                  }
  23                  System.out.println(key);
  24                  Map valueMap = (Map)elem.getValue();
  25                  dumpMapOfMap(valueMap);
  26              }
  27          }
  28      }