NavigableMap floorEntry() method in Java
The floorEntry() method of NavigableMap interface in Java is used to return a key-value mapping associated with the greatest key less than or equal to the given key, or null if there is no such key.
Syntax:
Map.Entry<K, V> floorEntry(K key)
Where, key is the key maintained by this map.
Parameters: key – the key
Return Value: It returns an entry with the greatest key less than or equal to key, or null if there is no such key.
Below programs illustrate the floorEntry() method in Java:
Program 1: When the key is integer.
import java.io.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
NavigableMap<Integer, String> nmmp = new TreeMap<>();
nmmp.put( 2 , "two" );
nmmp.put( 7 , "seven" );
nmmp.put( 3 , "three" );
System.out.println( "The mapping with greatest key is : "
+ nmmp.floorEntry( 2 ));
}
}
|
Output:
The mapping with greatest key is : 2=two
Program 2: When the key is string.
import java.io.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
NavigableMap<String, String> tmmp = new TreeMap<>();
tmmp.put( "one" , "two" );
tmmp.put( "six" , "seven" );
tmmp.put( "two" , "three" );
System.out.println( "The mapping associated with greatest key is : "
+ tmmp.floorEntry( "one" ));
}
}
|
Output:
The mapping associated with greatest key is : one=two
Reference: https://docs.oracle.com/javase/10/docs/api/java/util/NavigableMap.html#floorEntry(K)
Last Updated :
29 Sep, 2018
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