需要将对象强制转换为无界通配符...但是在我的情况下呢？

Question

public myConstuctor(Map<String, ?> myMap) {

    if (myMap.containsKey(MY_KEY)) {            

        myMap.put(MY_KEY, someObject);
    }

    someMemberVariable = new someClass(myMap);  
}

I am not able to put an object in the map due to the unbounded wildcard. I am not familiar with wildcard. What makes it difficult (for me..) is I am not able to change the constructor's input type (ie myMap) but I need to put an object in the map.

Will someone help..? Thanks in advance!

Answer 1

如果您认为someObject的类型与myMap兼容，

((Map)myMap).put(k, v);