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Maps are defined by the '''{{Javadoc|module=java.base|package=java.util|class=Map|monotype=y}}''' interface in Java.
===Map jenil interface implementations===
Maps are data structures that associate a key with an element. This lets the map be very flexible. If the key is the hash code of the element, the <code>Map</code> is essentially a <code>Set</code>. If it's just an increasing number, it becomes a list.
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