weakhashmap如何工作? [英] how does weakhashmap work?
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问题描述
<$ c $ 你不能在WeakHashMap中使用字符串文字(你可以,但不会有任何意义): c> String myKey =somekey;
您必须使用:
字符串myKey = new String(somekey);
在后一种情况下,字符串不会合并。
As in how does weakhashmap understand that a reference to one of its key is obsolete now especially if the key is a String which is pooled?
解决方案
You must not use String literals with WeakHashMap (well you can but there would be no point in it):
String myKey = "somekey";
instead you must use:
String myKey = new String("somekey");
In the latter case String is not pooled.
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