Java ConcurrentHashMap hashcode() MethodThe hashcode() method of ConcurrentHashMap class returns the hash code value for this Map, i.e., the sum of, for each key-value pair in the map, key.hashCode() ^ value.hashCode(). SyntaxParameterNo parameter is passed. Returnsthe hash code value for this map. ThrowsNullPointerException. Example 1Test it NowOutput: import java.util.concurrent.*; import java.util.*; public class ConcurrentHashMaphashcodeExample2 { public static void main(String[] args) { HashMap Example 2Test it NowOutput:
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