Java End Term: 30 April 2023, Set QPD1-S2 (January 2023 term)

1 1  class Example{
2 2      public void functionOne(){
3 3          // ...
4 4          functionTwo();
5 5          // ...
6 6      }
7 7      public void functionTwo(){
8 8          // ...
9 9      }
1010      public static void functionThree(){
1111          // ...
1212          Example e = new Example();
1313          e.functionOne();
1414          // ...
1515      }
1616      public static void main(String[] args) {
1717          // ...
1818          functionThree();
1919      }
2020  }

1class ContactInfo implements Cloneable{
2    String email;
3    // Constructor
4    // Accessor method getEmail()
5    // Mutator method setEmail()
6    public ContactInfo clone() throws CloneNotSupportedException{
7        return (ContactInfo)super.clone();
8    }
9}
10class Student implements Cloneable{
11    String name;
12    ContactInfo ci;
13    // Constructor
14    // Mutator method setName()
15    public Student clone() throws CloneNotSupportedException{
16        Student s = (Student)super.clone();
17        s.ci = s.ci.clone();
18        return s;
19    }
20    public String toString(){
21        return  name + ":" + ci.getEmail();
22    }
23}
24public class Test {
25    public static void main(String[] args) {
26        Student s1 = new Student("Rahul", new ContactInfo("mail"));
27        try{
28            Student s2 = s1.clone();
29            s2.ci.setEmail("new mail");
30            s2.setName("Sreeja");
31            System.out.println(s1);
32            System.out.println(s2);
33        }
34        catch(Exception e){
35            System.out.println(e);
36        }
37    }
38}

1class Shape{
2    public void area(){
3        System.out.println("Area exists");
4    }
5    public void sides(){
6        System.out.println("Sides may exist");
7    }
8}
9class Circle extends Shape{
10    public void area(){
11        System.out.println("Circle area");
12    }
13}
14class Rectangle extends Shape{
15    public void area(){
16        System.out.println("Rectangle area");
17    }
18    public void sides(){
19        System.out.println("Four sides");
20    }
21}
22public class Test{
23    static void display(Shape[] s){
24      for(int i = 0; i < s.length; i++){
25          s[i].area();
26          s[i].sides();
27      }
28    }
29    public static void main(String[] args){
30        Shape[] s = {new Circle(), new Rectangle()}; // LINE 1
31        display(s);
32    }
33}