问

新的ConcurrentHashMap的新ConcurrentHashMap

coraft 发布于 2023-02-13 15:20

我想初始化ConcurrentHashMap的ConcurrentHashMap与S

private final ConcurrentHashMap<
    String, 
    ConcurrentHashMap
> myMulitiConcurrentHashMap = new ConcurrentHashMap<
    String, 
    new ConcurrentHashMap()
>();

但是javac给了

HashMapper.java:132: error: illegal start of type
    new ConcurrentHashMap()
    ^
HashMapper.java:132: error: '(' or '[' expected
    new ConcurrentHashMap()
        ^
HashMapper.java:132: error: ';' expected
    new ConcurrentHashMap()

指着第二个new.

如何myMulitiConcurrentHashMap将newLY正确初始化？

1 个回答

你没有初始化内心ConcurrentHashMap<String, Double>; 只需以下工作:
```
new ConcurrentHashMap<
    String, 
    ConcurrentHashMap<String, Double>
>();
```
2023-02-13 15:23 回答

秋秋传奇哦_729

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