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Get floor key from NavigableMap in Java
To get floor key means to return the greatest key less than or equal to the given key, or null if there is no such key. This can be done with the floorKey() metho.
The following is an example to get floor key from NavigableMap
Example
import java.util.*;
public class Demo {
public static void main(String[] args) {
NavigableMap<String, Integer> n = new TreeMap<String, Integer>();
n.put("A", 498);
n.put("B", 389);
n.put("C", 868);
n.put("D", 988);
n.put("E", 686);
n.put("F", 888);
n.put("G", 999);
n.put("H", 444);
n.put("I", 555);
n.put("J", 666);
System.out.println("NavigableMap elements...
"+n);
System.out.println("Floor Key = "+n.floorKey("C"));
}
}Output
NavigableMap elements...
{A=498, B=389, C=868, D=988, E=686, F=888, G=999, H=444, I=555, J=666}
Floor Key = C
Updated on: 30-Jul-2019
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