Click here to watch in Youtube :
https://www.youtube.com/watch?v=VP537HT0rqw&list=UUhwKlOVR041tngjerWxVccw
TreeMapExample.java
Output
https://www.youtube.com/watch?v=VP537HT0rqw&list=UUhwKlOVR041tngjerWxVccw
TreeMapExample.java
import java.util.TreeMap; /* * Example of get(Object key) method. */ public class TreeMapExample { public static void main( String[] args ) { TreeMap<Integer, String> treeMap = new TreeMap<Integer, String>(); treeMap.put(1, "Cat"); treeMap.put(2, "Dog"); treeMap.put(4, "Apple"); treeMap.put(3, "Ball"); System.out.println("treeMap : " + treeMap +"\n"); /* * Returns the value to which the specified key is mapped, or null if * this map contains no mapping for the key. * * A return value of null does not necessarily indicate that the map * contains no mapping for the key; it's also possible that the map * explicitly maps the key to null. The containsKey operation may be * used to distinguish these two cases. */ String value = treeMap.get(2); System.out.println("value for the Key '2' : " + value); value = treeMap.get(10); System.out.println("value for the Key '10' : " + value); } }
treeMap : {1=Cat, 2=Dog, 3=Ball, 4=Apple} value for the Key '2' : Dog value for the Key '10' : null
https://sites.google.com/site/javaee4321/java-collections/TreeMapDemoGet.zip?attredirects=0&d=1
See also:
No comments:
Post a Comment