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I need a method to remove a entryset from hashmap by it's value. Is there a simple method without iteration?
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HashMap remove() Method in Java remove() is an inbuilt method of HashMap class and is used to remove the mapping of any particular key from the map. It basically removes the values for any particular key in the Map. Parameters: The method takes one parameter key whose mapping is to be removed from the Map.
To remove all values from HashMap, use the clear() method.
While iterating, check for the key at that iteration to be equal to the key specified. The entry key of the Map can be obtained with the help of entry. getKey() method. If the key matches, remove the entry of that iteration from the HashMap using remove() method.
There's a simple method, but it'll use iteration internally. (There's no way around that.)
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