Java : Collection Framework : HashSet (ToArrayParam)

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https://www.youtube.com/watch?v=k-wOSvnOc_g&list=UUhwKlOVR041tngjerWxVccw

HashSetExample.java

import java.util.HashSet;

/*
 * Example of toArray(T[] a) method.
 */
public class HashSetExample
{
    public static void main( String[] args )
    {
        HashSet<String> hashSet = new HashSet<String>();

        hashSet.add("Rohan");
        hashSet.add("Phil");
        hashSet.add("Ram");
        hashSet.add("Dave");
        hashSet.add("Peter");

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

        String[] strArray = new String[hashSet.size()];

        /*
         * hashSet elements will be copied to StrArray
         */

        hashSet.toArray(strArray);

        for( String name : strArray )
        {
            System.out.println(name);
        }

    }
}

Output

hashSet : [Rohan, Dave, Phil, Peter, Ram]

Rohan
Dave
Phil
Peter
Ram

To Download HashSetDemoToArrayParam Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/HashSetDemoToArrayParam.zip?attredirects=0&d=1

See also:

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JDBC Tutorial