if (map == null) {
System.out.println("Map is NULL!");
return;
}
Iterator it = map.keySet().iterator();
while (it.hasNext()) {
Object o = (Object) it.next();
if (map.get(o) instanceof List) {
List l = (List) map.get(o);
System.err.println("Map.key:" + o.toString());
for (Object object : l) {
System.err.println("Map.values:" + object);
}
} else {
System.err.println("Map.key:" + o.toString() + "\n"
+ "Map.value:" + map.get(o).toString());
}
}
}
這是個控制臺輸出map的範例 自己寫的