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https://www.youtube.com/watch?v=texrZ_OxFCM&list=UUhwKlOVR041tngjerWxVccw
HashMapExample.java
Output
https://www.youtube.com/watch?v=texrZ_OxFCM&list=UUhwKlOVR041tngjerWxVccw
HashMapExample.java
import java.util.HashMap; import java.util.Map; import java.util.Set; /* * Example of entrySet() method. */ public class HashMapExample { public static void main( String[] args ) { HashMap<Integer, String> hashMap = new HashMap<Integer, String>(); hashMap.put(1, "Apple"); hashMap.put(2, "Ball"); hashMap.put(3, "Cat"); System.out.println("hashMap : " + hashMap + "\n"); /* * A map entry (key-value pair). * * Returns a Set view of the mappings contained in this map. */ Set<Map.Entry<Integer, String>> entrySet = hashMap.entrySet(); System.out.println("entrySet : " + entrySet + "\n"); System.out.println("-----------------------"); System.out.println("Key" +" | " + "value"); System.out.println("-----------------------"); for( Map.Entry<Integer, String> entry : entrySet ) { System.out.println(entry.getKey() + " | " +entry.getValue()); } } }
hashMap : {1=Apple, 2=Ball, 3=Cat} entrySet : [1=Apple, 2=Ball, 3=Cat] ----------------------- Key | value ----------------------- 1 | Apple 2 | Ball 3 | Cat
https://sites.google.com/site/javaee4321/java-collections/HashMapDemoEntrySet.zip?attredirects=0&d=1
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