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Author: AvinandanBose

NavigableMap13.java

@@ -0,0 +1,23 @@
+import java.util.NavigableMap;
+import java.util.TreeMap;
+public class NavigableMap13 {
+    // lowerKey
+    public static void main(String[] args) throws Exception {
+        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("lowerEntry:" + map.lowerKey(3.0f));
+        // i.e. if less than 3.4f then it returns Key:2.6f  (LowerKey)
+        System.out.println("lowerEntry:" + map.lowerKey(4.3f));
+        // i.e. if equal to 4.3f then it returns Key:3.4f  (LowerKey)
+        System.out.println("lowerEntry:" + map.lowerKey(1.8f));
+        // i.e. if equal to 1.8f then it returns null -- No LowerKey
+        
+    }
+    
+}