Monday, 19 January 2015

Java : Collection Framework : HashMap (Default Constructor)


Click here to watch in Youtube : 
https://www.youtube.com/watch?v=Im48W2AdnHI&list=UUhwKlOVR041tngjerWxVccw

HashMapExample.java
import java.util.HashMap;

/*
 * Example of HashMap() Constructor.
 */
public class HashMapExample
{
    public static void main(String[] args)
    {
        /*
         * Constructs an empty HashMap with the default initial capacity (16)
         * and the default load factor (0.75).
         */
        HashMap<Integer, String> hashMap = new HashMap<Integer, String>();

        System.out.println("hashMap : " + hashMap + "\n");

        hashMap.put(1, "Apple");
        hashMap.put(3, "Cat");
        hashMap.put(2, "Ball");

        System.out.println("hashMap : " + hashMap);

    }
}
Output
hashMap : {}

hashMap : {1=Apple, 2=Ball, 3=Cat}
To Download HashMapDemoDefaultConstructor Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/HashMapDemoDefaultConstructor.zip?attredirects=0&d=1

See also:
  • All JavaEE Viedos Playlist
  • All JavaEE Viedos
  • Servlets Tutorial
  • All Design Patterns Links
  • JDBC Tutorial
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