TreeMap pollFirstEntry() method in java

Let’s learn TreeMap pollFirstEntry() method in java. TreeMap pollFirstEntry() method in java pollFirstEntry() method of TreeMap class removes and returns a key-value mapping associated with the least key in this map, or null if the map is empty. Syntax: public Map.Entry<K, V> pollFirstEntry() Now let’s see example on TreeMap pollFirstEntry() method. import java.util.TreeMap; public class…

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