Java End Term: 7 August 2022, Set QPB1 (May 2022 term)

1class Student{
2    private String name;
3    public Student(String n){
4        this.name = n;
5    }
6    public Student(Student s){
7        this.name = s.name;
8    }
9    public void setName(String n){
10        name = n;
11    }
12    public String getName(){
13        return name;
14    }
15}
16public class Test{
17    public static void main(String[] args){
18        Student s1 = new Student("Ram");
19        Student s2 = s1;
20        Student s3 = new Student(s1);
21        s1.setName("Rahul");
22        System.out.println("s2.name : " + s2.getName());
23        System.out.println("s3.name : " + s3.getName());
24    }
25}

1india is my country
2india is my country

1import java.io.*;
2import java.util.*;
3public class FileTest {
4    public static void main(String[] args) {
5        try {
6            var in = new FileInputStream("data.txt");
7            var sc = new Scanner(in);
8            var data = new TreeSet<String>();
9            while(sc.hasNext()) {
10                data.add(sc.next()+" ");
11            }
12            for(String str:data)
13                System.out.print(str);
14        }
15        catch (FileNotFoundException e) {
16            System.out.println("File does not exist.");
17        }
18        catch (IOException e) {
19            System.out.println("Error in writing a file.");
20        }
21    }
22}

1import java.util.stream.*;
2public class Main{
3    public static void main(String[] args){
4      Integer[] a = {10, 8, 22, 13, 7};
5      Stream.of(a).map((i) -> i - 10)
6                  .filter((i) -> i% 2 == 0)
7                  .forEach((x) ->  System.out.println(x));
8    }
9}