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Author: AvinandanBose

NavigableMap15.java

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+import java.util.NavigableMap;
+import java.util.TreeMap;
+
+public class NavigableMap15 {
+    public static void main(String[] args) throws Exception {
+        // pollFirstEntry
+        NavigableMap<Float, Integer> map = new TreeMap<>();
+        map.put(1.8f,11 );
+        map.put(2.6f, 9);
+        map.put(3.4f, 78);
+        map.put(4.3f, 5);
+        map.put(5.6f, 1);
+        map.put(6.8f, 3);
+        System.out.println("Map:" + map);
+        System.out.println("FirstEntry:" + map.pollFirstEntry());
+        System.out.println("Map:" + map);
+    }
+    
+}