Web Reference: Jan 4, 2025 · The java.util.HashMap.get () method of HashMap class is used to retrieve or fetch the value mapped by a particular key mentioned in the parameter. It returns NULL when the map contains no such mapping for the key. An instance of HashMap has two parameters that affect its performance: initial capacity and load factor. The capacity is the number of buckets in the hash table, and the initial capacity is simply the capacity at the time the hash table is created. Definition and Usage The get() method returns the value of the entry in the map which has a specified key.
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