Java：如何创建 Map<String,Object> 对象数组
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Java: How to create an array of Map<String,Object> objects
提问by David Parks
Possible Duplicate:
Cannot create an array of LinkedLists in Java…?
I want to call this method:
我想调用这个方法：
executeBatch(Map<String,Object>[] batch)
But for the life of me I can't figure out how to create an array of Map<String,Object>[]
但是对于我的生活，我无法弄清楚如何创建一个数组 Map<String,Object>[]
I get the error "Can create a generic array of HashMap" when I try HashMap<String,Object>[] params = new HashMap<String,Object>[20000];
我在尝试时收到错误“可以创建一个通用的 HashMap 数组” HashMap<String,Object>[] params = new HashMap<String,Object>[20000];
I also failed at attempting to cast an ArrayList.toArray()to a HashMap<String,Object>[]
我也未能尝试将 an 转换ArrayList.toArray()为 aHashMap<String,Object>[]
回答by Lukas Eder
You really cant. You have to do it like this:
你真的不行。你必须这样做：
@SuppressWarnings("unchecked")
HashMap<String, Object>[] map = new HashMap[20000];
回答by vbence
Or with a more barbaric solution you can compile adding:
或者使用更野蛮的解决方案，您可以编译添加：
-Xlint:unchecked
