Monday, 22 December 2014

Java : Collection Framework : LinkedHashSet (Check empty or not)


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https://www.youtube.com/watch?v=PhCu6ZnhTqE&list=UUhwKlOVR041tngjerWxVccw

LinkedHashSetExample.java
import java.util.LinkedHashSet;

/*
 * Example of  isEmpty() method.
 */
public class LinkedHashSetExample
{
    public static void main( String[] args )
    {
        LinkedHashSet<String> linkedHashSet = new LinkedHashSet<String>();

        System.out.println("linkedHashSet: " + linkedHashSet);
        /*
         * Returns true if this set contains no elements.
         */
        boolean isEmpty = linkedHashSet.isEmpty();
        System.out.println("isEmpty :  " + isEmpty + "\n");

        linkedHashSet.add("Dave");
        linkedHashSet.add("Peter");
        linkedHashSet.add("Phil");
        linkedHashSet.add("Rohit");
        linkedHashSet.add("Virat");

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

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

    }
}

Output
linkedHashSet: []
isEmpty :  true

linkedHashSet: [Dave, Peter, Phil, Rohit, Virat]
isEmpty :  false
To Download LinkedHashSetDemoIsEmpty Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/LinkedHashSetDemoIsEmpty.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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