A HashSet is equal to another object if the other object implements the Set interface,
has the same size(), and contains all the same elements.
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
public class MainClass {
public static void main(String[] a) {
String elements[] = { "A", "B", "C", "D", "E" };
Set set = new HashSet(Arrays.asList(elements));
elements = new String[] { "A", "B", "C", "D" };
Set set2 = new HashSet(Arrays.asList(elements));
System.out.println(set.equals(set2));
}
}
false