Tuesday, 27 January 2015

Java : Collection Framework : LinkedHashMap (isEmpty)


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LinkedHashMapExample.java
import java.util.LinkedHashMap;

/*
 * Example of isEmpty() method.
 */
public class LinkedHashMapExample
{
    public static void main( String[] args )
    {

        LinkedHashMap<Integer, String> linkedHashMap = new LinkedHashMap<Integer, String>();
        

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

        /*
         * Returns true if this map contains no key-value mappings.
         */
        boolean isEmpty = linkedHashMap.isEmpty();

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

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

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

        isEmpty = linkedHashMap.isEmpty();

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

    }
}
Output
linkedHashMap : {}
isEmpty : true

linkedHashMap : {1=Apple, 3=Cat, 2=Ball}
isEmpty : false
To Download LinkedHashMapDemoIsEmpty Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/LinkedHashMapDemoIsEmpty.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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