//JDK1.5
Map map = new HashMap();
for(Object obj : map.keySet()) {
Object key = obj;
Object value = map.get(obj);
}
//JDK1.4
Map map = new HashMap() ;
Iterator iter = map.entrySet().iterator();
while(iter.hasNext()) {
Map.Entry entry = (Map.Entry)iter.next();
Object key = entry.getKey();
Object value = entry.getValue();
}