Convert array to Set : HashSet « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. HashSet

import java.util.Arrays;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

public class Main {
  public static void main(String[] args) {
    Integer[] numbers = { 7, 7, 8, 9, 10, 8, 8, 9, 6, 5, 4 };

    List<Integer> list = Arrays.asList(numbers);
    Set<Integer> set = new HashSet<Integer>(list);

    for (Iterator iterator = set.iterator(); iterator.hasNext();) {
      Object o = iterator.next();
      System.out.print(o + ", ");
    }
  }
}