Java Quiz 2: 3 December 2023 (September 2023 term)

1import java.util.*;
2
3public class SetIteratorTest {
4    public static void main(String[] args) {
5        var set1 = new HashSet<String>();
6        set1.add("Cherry");
7        set1.add("Banana");
8        set1.add("Apple");
9        set1.add("Date");
10
11        var set2 = new TreeSet<String>(set1);
12        Iterator<String> it1 = set1.iterator();
13        Iterator<String> it2 = set2.iterator();
14
15        while (it1.hasNext()) {
16            System.out.println(it1.next());
17        }
18
19        while (it2.hasNext()) {
20            System.out.println(it2.next());
21        }
22    }
23}

1interface Language{
2    void display();
3}
4class French implements Language{
5    public void display() {
6        System.out.println("French Language");
7    }
8}
9class English implements Language{
10    public void display() {
11        System.out.println("English Language");
12    }
13}
14class LanguageList{
15    private Object[] LArr = {new French(), new English()};
16    public void getInfo(){
17        for(int i = 0; i < LArr.length; i++){
18            //LINE 1
19        }
20    }
21}
22public class Test{
23    public static void main(String[] args) {
24        LanguageList aList = new LanguageList();
25        aList.getInfo();
26    }
27}

1import java.util.stream.*;
2
3public class Test {
4    public static void main(String[] args) {
5        String[] colors = {"red", "green", "blue", "yellow"};
6        Stream.of(colors).map((color) -> color.length())
7            .filter((length) -> length % 2 == 0)
8            .forEach((x) -> System.out.println(x));
9    }
10}