Monday, 2 March 2015

Java : Collection Framework : Hashtable (Get)


Click here to watch in Youtube : 
https://www.youtube.com/watch?v=Exkg8Q9Ym8s&list=UUhwKlOVR041tngjerWxVccw

HashtableExample.java
import java.util.Hashtable;

/*
 * Example of get(Object key) method.
 */
public class HashtableExample
{
    public static void main( String[] args )
    {

        Hashtable<String, String> hashtable = new Hashtable<String, String>();

        /*
         * Key = CountryCode,Value = CountryName
         */
        hashtable.put("AF", "AFGHANISTAN");
        hashtable.put("BE", "BELGIUM");
        hashtable.put("US", "UNITED STATES");
        hashtable.put("IN", "INDIA");

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

        /*
         * Returns the value to which the specified key is mapped, or null if
         * this map contains no mapping for the key.
         */
        
        String value = hashtable.get("US");

        System.out.println("value for the Key 'US' : " + value);

        value = hashtable.get("PA");

        System.out.println("value for the Key 'PA' : " + value);

    }
}
Output
hashtable : {IN=INDIA, AF=AFGHANISTAN, BE=BELGIUM, US=UNITED STATES}

value for the Key 'US' : UNITED STATES
value for the Key 'PA' : null
To Download HashtableDemoGet Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/HashtableDemoGet.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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