java-collections-course/T3_HashSet.java at main · MK-Code-Club/java-collections-course · GitHub

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import java.util.HashSet;


public class T3_HashSet {
    public static void main(String[] args) {
        HashSet<Integer> set = new HashSet<>();

        // add
        set.add(10);
        set.add(67);
        set.add(10);
        set.add(43);
        set.add(27);
        System.out.println(set);

        // remove
        set.remove(67);
        System.out.println(set);

        // contains - true or false
        System.out.println(set.contains(10));

        // size
        System.out.println(set.size());

        // clear
        set.clear();
        System.out.println(set);


    }
}