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Java ConcurrentMap
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<p>The Java programming language's <a href="/facts/Java_Collections_Framework/fKaKJtIA">Java Collections Framework</a> version 1.5 and later defines and implements the original regular single-threaded Maps, and also new thread-safe Maps implementing the <a href="https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/util/concurrent/ConcurrentMap.html">java.util.concurrent.ConcurrentMap</a> interface among other concurrent interfaces. In Java 1.6, the <a href="https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/util/NavigableMap.html">java.util.NavigableMap</a> interface was added, extending <a href="https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/util/SortedMap.html">java.util.SortedMap</a>, and the <a href="https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/util/concurrent/ConcurrentNavigableMap.html">java.util.concurrent.ConcurrentNavigableMap</a> interface was added as a subinterface combination. </p>