- Caching: HashMap can be used as a storage structure for caching data, storing key-value pairs and quickly querying data.
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Data indexing: HashMap can be used to build data indexes and improve data query efficiency.
- Data grouping: HashMap can be used to group data, for example, by grouping data based on a specific attribute.
- Caching data: HashMap can be used to store cached data, such as storing user login information, system configuration information, etc.
- User permissions: HashMap can be used to store information about user permissions, such as their roles and access rights.
- Data processing: HashMap can be used to store and process data, such as storing the data that needs to be processed and the processing results.
- Event handling: HashMap can be used to store information related to event handling, such as storing event types and event handlers.
- Key-value storage: HashMap can be used to store key-value pair data, such as configuration information, mapping relationships, and so on.
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