Click here to watch in Youtube :
https://www.youtube.com/watch?v=CjJJUHfZ1go&list=UUhwKlOVR041tngjerWxVccw
TreeMapExample.java
Output
https://www.youtube.com/watch?v=CjJJUHfZ1go&list=UUhwKlOVR041tngjerWxVccw
TreeMapExample.java
import java.util.HashMap; import java.util.TreeMap; /* * Example of TreeMap(Map<? extends K,? extends V> m) Constructor. */ public class TreeMapExample { public static void main( String[] args ) { HashMap<Integer, String> hashMap = new HashMap<Integer, String>(); hashMap.put(1, "Cat"); hashMap.put(2, "Dog"); hashMap.put(4, "Apple"); hashMap.put(3, "Ball"); System.out.println("hashMap : " + hashMap + "\n"); /* * Constructs a new tree map containing the same mappings as the given * map, ordered according to the natural ordering of its keys. All keys * inserted into the new map must implement the Comparable interface. */ TreeMap<Integer, String> treeMap = new TreeMap<Integer, String>(hashMap); System.out.println("treeMap : " + treeMap + "\n"); } }
hashMap : {1=Cat, 2=Dog, 3=Ball, 4=Apple} treeMap : {1=Cat, 2=Dog, 3=Ball, 4=Apple}
https://sites.google.com/site/javaee4321/java-collections/TreeMapDemoConsAcceptsMap.zip?attredirects=0&d=1
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