Java by API/java.util/NavigableMap

NavigableMap: ceilingKey(T key)

   <source lang="java">

import java.util.Calendar; import java.util.Locale; import java.util.Map; import java.util.NavigableMap; import java.util.TreeMap; public class Main {

 public static void main(String args[]) {
   Calendar now = Calendar.getInstance();
   Locale locale = Locale.getDefault();
   Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
   NavigableMap<String, Integer> nav = new TreeMap<String, Integer>(names);
   System.out.printf("Whole list:%n%s%n", nav);
   System.out.printf("Key ceiling after Sunday: %s%n", nav.ceilingKey("Sunday"));
 }

}

 </source>
   
  
 
  

NavigableMap: floorKey(T key)

   <source lang="java">

import java.util.Calendar; import java.util.Locale; import java.util.Map; import java.util.NavigableMap; import java.util.TreeMap; public class Main {

 public static void main(String args[]) {
   Calendar now = Calendar.getInstance();
   Locale locale = Locale.getDefault();
   Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
   NavigableMap<String, Integer> nav = new TreeMap<String, Integer>(names);
   System.out.printf("Whole list:%n%s%n", nav);
   System.out.printf("Key floor before Sunday: %s%n", nav.floorKey("Sunday"));
 }

}

 </source>
   
  
 
  

NavigableMap: higherKey(String key)

   <source lang="java">

import java.util.Calendar; import java.util.Locale; import java.util.Map; import java.util.NavigableMap; import java.util.TreeMap; public class Main {

 public static void main(String args[]) {
   Calendar now = Calendar.getInstance();
   Locale locale = Locale.getDefault();
   Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
   NavigableMap<String, Integer> nav = new TreeMap<String, Integer>(names);
   System.out.printf("Whole list:%n%s%n", nav);
   System.out.printf("Key higher after Sunday: %s%n", nav.higherKey("Sunday"));
 }

}

 </source>
   
  
 
  

NavigableMap: lastEntry()

   <source lang="java">

import java.util.Calendar; import java.util.Locale; import java.util.Map; import java.util.NavigableMap; import java.util.TreeMap; public class Main {

 public static void main(String args[]) {
   Calendar now = Calendar.getInstance();
   Locale locale = Locale.getDefault();
   Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
   NavigableMap<String, Integer> nav = new TreeMap<String, Integer>(names);
   System.out.printf("Whole list:%n%s%n", nav);
   System.out.printf("Last key: %s\tLast entry: %s%n", nav.lastKey(), nav.lastEntry());
 }

}

 </source>
   
  
 
  

NavigableMap: lowerKey(T key)

   <source lang="java">

import java.util.Calendar; import java.util.Locale; import java.util.Map; import java.util.NavigableMap; import java.util.TreeMap; public class Main {

 public static void main(String args[]) {
   Calendar now = Calendar.getInstance();
   Locale locale = Locale.getDefault();
   Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
   NavigableMap<String, Integer> nav = new TreeMap<String, Integer>(names);
   System.out.printf("Whole list:%n%s%n", nav);
   System.out.printf("Key lower before Sunday: %s%n", nav.lowerKey("Sunday"));
 }

}

 </source>
   
  
 
  

NavigableMap: navigableKeySet()

   <source lang="java">

import java.util.Calendar; import java.util.Locale; import java.util.Map; import java.util.NavigableMap; import java.util.TreeMap; public class Main {

 public static void main(String args[]) {
   Calendar now = Calendar.getInstance();
   Locale locale = Locale.getDefault();
   Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
   NavigableMap<String, Integer> nav = new TreeMap<String, Integer>(names);
   System.out.printf("Whole list:%n%s%n", nav);
   System.out.printf("Map before Sunday: %s%n", nav.navigableKeySet());
 }

}

 </source>
   
  
 
  

NavigableMap: pollFirstEntry()

   <source lang="java">

import java.util.NavigableMap; import java.util.TreeMap; import java.util.Map.Entry; public class Main {

 public static void main(String[] args) {
   NavigableMap<Integer, String> map = new TreeMap<Integer, String>();
   map.put(2, "two");
   map.put(1, "one");
   map.put(3, "three");
   System.out.println("Original map: " + map + "\n");
   Entry firstEntry = map.pollFirstEntry();
   System.out.println("First entry: " + firstEntry);
   System.out.println("After polling the first entry: " + map + "\n");
   Entry lastEntry = map.pollLastEntry();
   System.out.println("Last entry:" + lastEntry);
   System.out.println("After polling last entry:" + map);
 }

}

 </source>
   
  
 
  

NavigableMap: pollLastEntry()

   <source lang="java">

import java.util.NavigableMap; import java.util.TreeMap; import java.util.Map.Entry; public class Main {

 public static void main(String[] args) {
   NavigableMap<Integer, String> map = new TreeMap<Integer, String>();
   map.put(2, "two");
   map.put(1, "one");
   map.put(3, "three");
   System.out.println("Original map: " + map + "\n");
   Entry firstEntry = map.pollFirstEntry();
   System.out.println("First entry: " + firstEntry);
   System.out.println("After polling the first entry: " + map + "\n");
   Entry lastEntry = map.pollLastEntry();
   System.out.println("Last entry:" + lastEntry);
   System.out.println("After polling last entry:" + map);
 }

}

 </source>