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Get the count of NavigableMap in Java
To get the count of NavigableMap in Java, use the size() method.
Let us first create NavigableMap and add elements −
NavigableMap<Integer, String> n = new TreeMap<Integer, String>(); n.put(5, "Tom"); n.put(9, "John"); n.put(14, "Jamie"); n.put(1, "Tim"); n.put(4, "Jackie");
Now, get the count −
n.size()
The following is an example to implement the size() method to get the count of the NavigableMap elements −
Example
import java.util.*; public class Demo { public static void main(String[] args) { NavigableMap<Integer, String> n = new TreeMap<Integer, String>(); n.put(5, "Tom"); n.put(9, "John"); n.put(14, "Jamie"); n.put(1, "Tim"); n.put(4, "Jackie"); n.put(15, "Kurt"); n.put(19, "Tiger"); n.put(24, "Jacob"); System.out.println("NavigableMap elements...
"+n); System.out.println("The size of the NavigableMap = " + n.size()); } }
Output
NavigableMap elements... {1=Tim, 4=Jackie, 5=Tom, 9=John, 14=Jamie, 15=Kurt, 19=Tiger, 24=Jacob} The size of the NavigableMap = 8
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