containsValue
ContainsValue is a method defined in the Map interface of the Java standard library. It checks whether the map maps one or more keys to a specified value and returns true if such a mapping exists. The method considers only the values in the map, not the keys.
Signature and behavior: The method is declared as boolean containsValue(Object value). It uses the equals method
Performance and implementation notes: In typical implementations such as HashMap, containsValue performs a linear scan over
Relation to other methods: containsValue is distinct from containsKey, which checks for the presence of a specific
Example: For a map with entries {"a"->1, "b"->2}, containsValue(2) returns true, while containsValue(3) returns false. If