Convert an ArrayList to HashSet in Java

Description

The following code shows how to convert an ArrayList to HashSet.

Example


//from   w  ww.  j a  v a  2  s .c om
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class Main {
  public static void main(String[] args) {
    List<String> myList = new ArrayList<String>();
    myList.add("A");
    myList.add("B");
    myList.add("C");
    myList.add("D");

    Set<String> mySet = new HashSet<String>(myList);

    System.out.println(mySet);
  }
}

The code above generates the following result.





















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