import java.util.*;
public class SetsDemo {
public static void main(String[] args) {
Set<String> uniqueKoelPages = new TreeSet<>();
uniqueKoelPages.add("LoginPage");
uniqueKoelPages.add("HomePage");
uniqueKoelPages.add("HomePage");
uniqueKoelPages.add("ProfilePage");
uniqueKoelPages.add("AProfilePage");
System.out.println(uniqueKoelPages);
Set<Integer> set1 = new HashSet<>();
set1.add(1);
set1.add(3);
set1.add(2);
set1.add(4);
set1.add(8);
set1.add(9);
set1.add(0);
Set<Integer> set2 = new HashSet<>();
set2.add(1);
set2.add(3);
set2.add(7);
set2.add(5);
set2.add(4);
set2.add(0);
set2.add(7);
set2.add(5);
// Union
Set<Integer> set3 = new HashSet<>(set1);
set3.addAll(set2);
System.out.println(set3);
// intersection
Set<Integer> setIntersection = new HashSet<>(set1);
setIntersection.retainAll(set2);
System.out.println(setIntersection);
// Differences
Set<Integer> setDifference = new HashSet<>(set1);
setDifference.removeAll(set2);
System.out.println(setDifference);
}
}
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