unmodifiable

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Returning an unmodifiable map

Using Collections.unmodifiableMap(...), I\'m trying to return an unmodifiable view of a map. Let\'s say I have the following method,[详细]

2023-03-28 00:11 分类：问答
How to return a thread safe/immutable Collection in Java?

In the project I am coding, I need to return a thread safe and immutable view from a function. However, I am unsure of this.开发者_JS百科 Since synchronizedList and unmodifiableList just return views[详细]

2023-03-19 07:39 分类：问答
Java collections API: why are Unmodifiable[List|Set|Map] not publicly visible classes?

Collections.unmodifiableList(...) returns a new instance of a static inner class UnmodifiableList. Other unmodifiable collections classes are constructed same way.[详细]

2023-01-27 12:05 分类：问答
How inefficient is passing Collections.unmodifiable* an instance which is already wrapped with Collections.unmodifiable*?

I have bits of piecework being done by different custom (source code unavailable) frameworks which hand back Map instances. Unfortunately, these frameworks are not consistent in their returning Map in[详细]

2023-01-24 05:38 分类：问答
When is the unmodifiablemap (really) necessary?

I have a map of constants, like this: private static Map<String, Character> _typesMap = new HashMap<String, Character>() {[详细]

2023-01-21 18:33 分类：问答
Java unmodifiable array

final Integer[] arr={1,2,3}; arr[0]=3; System.out.println(Arrays.toString(arr)); I tried the above code to see whether a final array\'s variables can be reassigned[ans:it can be].I understand that b[详细]

2023-01-16 09:37 分类：问答
《锦绣南歌》又美又飒的女主设定，为什么看着看着就不香了？？

除了《三十而已》的热门话题，《锦绣南歌》还紧跟最近最火的电视剧。103010也可以算是一部大女主设定的古装电视剧。刚播出的时候反响也很好。这么好看又沙沙的女主设定，为什么看完不香？[详细]

2022-12-22 15:10 分类：问答