El método cielingEntry() de la interfaz NavigableMap en Java se usa para devolver un mapeo de clave-valor asociado con la clave mínima mayor o igual que la clave dada, o nulo si no existe tal clave.
Sintaxis :
Map.Entry< K, V > ceilingEntry(K key)
Parámetros : Acepta un único parámetro Key que es la clave a mapear.
Valor devuelto : Devuelve una asignación de clave-valor asociada con la clave mínima mayor o igual que la clave dada, o nulo si no existe tal clave.
Los siguientes programas ilustran el método ceilingEntry() en Java:
Programa 1 : Cuando la clave es entera.
// Java code to demonstrate the working of
// ceilingEntry() method
import java.io.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the NavigableMap of Integer and String
NavigableMap<Integer, String> navmap = new TreeMap<>();
// assigning the values in the NavigableMap
// using put()
navmap.put(2, "two");
navmap.put(7, "seven");
navmap.put(3, "three");
// Use of ceilingEntry()
// returns 7=seven ( next greater key-value)
System.out.println("The next greater key-value of 5 is : "
+ navmap.ceilingEntry(5));
// returns "null" as no value present
// greater than or equal to number
System.out.println("The next greater key-value of 8 is : "
+ navmap.ceilingEntry(8));
}
}
// Java code to demonstrate the working of
// ceilingEntry() method
import java.io.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the NavigableMap of String and String
NavigableMap<String, String> navmap = new TreeMap<String, String>();
// assigning the values in the NavigableMap
// using put()
navmap.put("one", "Geeks");
navmap.put("two", "for");
navmap.put("three", "Geeks");
// Use of ceilingEntry()
// returns one = Geeks ( next greater key-value of "a")
System.out.println("The next greater key-value of a is : "
+ navmap.ceilingEntry("a"));
// returns three = Geeks
System.out.println("The next greater key-value of p is : "
+ navmap.ceilingEntry("p"));
}
}