Week 5: Class hierarchies/11B. Encrypted connection

The program defines the class 'Connection'. 
Write the class 'EncryptedConnection', which inherits the class Connection.

The class has 2 new string-type attributes, encryption and password. 
Implement get methods for these.

In addition, 3 constructor must be written in the class:
1 
A constructor that takes as parameters speed, encryption(string) and password (also string): 
the constructor sets the values of the attirbutes according to the parameters.

2 
A constructor that takes as its parameter only the speed. 
A constructor that sets the speed attribute according to the parameter. 
The attribute encryption value is "SHA" and the password is "abcabc".

3 
A constructor with no parameters at all. 
The speed is set to 100, and the other attributes are set to the same values as in the case of constructor 2





import java.util.Random;

public class Test{
    public static void main(String[] args){
        final Random r = new Random();
        
        
        System.out.println("Testing class EncryptedConnection...");
        
        String[] hash = "SHA SSH ABC LTD SMP DDR OY RNO RKK".split(" ");
        String[] passwords = "abc123 pass12 password parrwosd 123456".split(" ");
        
        // Testing inheritance first
        Connection y = new EncryptedConnection();
        
        // Constructors
        String selectedH = hash[r.nextInt(hash.length)];
        String passW = passwords[r.nextInt(passwords.length)];
        int speed = r.nextInt(100) + 1;
        
        System.out.println("Creating an encrypted connection with the following parameters");
        System.out.println("(" + speed + ", " + selectedH + ", " + passW + ")");
        EncryptedConnection conn = new EncryptedConnection(speed, selectedH, passW);
        System.out.println("Speed: " + conn.getSpeed());
        System.out.println("Protection: " + conn.getEncryption());
        System.out.println("Password: " + conn.getPassword());
        System.out.println("");
        
        speed = r.nextInt(100) + 1;
        System.out.println("Creating an encrypted connection with the following parameters");
        System.out.println("(" + speed + ")");
        conn = new EncryptedConnection(speed);
        System.out.println("Speed: " + conn.getSpeed());
        System.out.println("Protection: " + conn.getEncryption());
        System.out.println("Password: " + conn.getPassword());
        System.out.println("");
        
        System.out.println("Creating an encrypted connection with the following parameters");
        System.out.println("()");
        conn = new EncryptedConnection();
        System.out.println("Speed: " + conn.getSpeed());
        System.out.println("Protection: " + conn.getEncryption());
        System.out.println("Password: " + conn.getPassword());
        System.out.println("");
    }
}


class Connection {
    protected int speed;
    
    public Connection(int speed) {
        this.speed = speed;
    }
    
    public int getSpeed() {
        return speed;
    }
}




//ADD
class EncryptedConnection extends Connection {
    private String encryption;
    private String password;

    //constructor1
    public EncryptedConnection(int speed, String encryption, String password){
        super(speed);
        this.encryption = encryption;
        this.password = password;
    }

    //constructor2
    public EncryptedConnection(int speed){
        super(speed);
        this.encryption = "SHA";
        this.password = "abcabc";
    }

    //constructor3
    // APPROACH1
    // public EncryptedConnection(){
    //     super(100);
    //     this.encryption = "SHA";
    //     this.password = "abcabc";
    // }
    //APPROACH2
    // CALL/reuse CONSTRUCTOR2
    public EncryptedConnection() {
        this(100);  
    }

    public String getEncryption() {
        return encryption;
    }

    public String getPassword() {
        return password;
    }
}





Testing class EncryptedConnection...
Creating an encrypted connection with the following parameters
(17, OY, 123456)
Speed: 17
Protection: OY
Password: 123456

Creating an encrypted connection with the following parameters
(23)
Speed: 23
Protection: SHA
Password: abcabc

Creating an encrypted connection with the following parameters
()
Speed: 100
Protection: SHA
Password: abcabc