Lab 3 Inheritance

Lab 3

Lab 3 procedures:

1. Create a class called MobileDevice with a private field deviceType that will be initialized to the string “Mobile Device” in the constructor. Include the corresponding setter and getter methods.
2. Create another class SmartPhone that will inherit MobileDevice, with a private field deviceType initialized to the string “Smart Phone” in the constructor, and override the getter method by returning the string: “Mobile Device -> Smart Phone”. (Hint: To obtain this result make a call to the super class getter method).
3. Create three more classes: Android, iPhone, and WindowsPhone that will inherit SmartPhone, have a private field deviceType initialized to the string “Android”, “iPhone”, or “Windows Phones” correspondingly in the constructor, and override the getter method returning the corresponding string  “Mobile Device -> Smart Phone -> iPhone” for iPhone,“Mobile Device -> Smart Phone -> Android” for Android”, or “Mobile Device -> Smart Phone -> Windows Phone” for Windows Phone.

Once you create the classes, run the client code and report your output.

Hierarchy

Overview:

In this lab we where issue a client code, in which we had to create classes to display the corresponding  output.

Code:

Mobile device

package Lab3;

public class MobileDevice  
{ 
	public String deviceType = "Mobile Device";

	public void setDeviceType()
	{
		return;
	}

	public String getDeviceType()
	{
		return deviceType;
	}
}

Smart Phone

package Lab3;

public class smartPhone extends MobileDevice {

	private String deviceType = "Smart Phone";

	public String getDeviceType()
	{
		deviceType = super.getDeviceType() + " --> " +  deviceType;
		return deviceType;
	}

}

Android

package Lab3;

public class Android extends smartPhone
{
	private String deviceType;
	public Android()
	{
		deviceType = "Android";
		setDeviceType();
	}
	public String getDeviceType()
	{
		deviceType = super.getDeviceType() + " --> " + deviceType;
		return deviceType;
	}
}

I-Phone

package Lab3;

public class Iphone extends smartPhone
{
	private String deviceType;
	public Iphone()
	{
		deviceType = "I-Phone";
		setDeviceType();
	}
	public String getDeviceType()
	{
		deviceType = super.getDeviceType() + " --> " + deviceType;
		return deviceType;
	}
}

Windows Phone

package Lab3;

public class WindowsPhone extends smartPhone
{
	private String deviceType;
	public WindowsPhone()
	{
		deviceType = "Windows Phone";
		setDeviceType();
	}
	public String getDeviceType()
	{
		deviceType = super.getDeviceType() + " --> " + deviceType;
		return deviceType;
	}
}

Client Code

package Lab3;

public class MobileDeviceClient {	
	public static void main(String[] args) {
		MobileDevice myMobileDevice = new MobileDevice();
		smartPhone mySmartPhone = new smartPhone();
		Iphone myiPhone = new Iphone();
		Android myAndroid = new Android();
		WindowsPhone myWindowsPhone = new WindowsPhone();
		System.out.println(myMobileDevice.getDeviceType());
		System.out.println(mySmartPhone.getDeviceType());
		System.out.println(myiPhone.getDeviceType());		
		System.out.println(myAndroid.getDeviceType());
		System.out.println(myWindowsPhone.getDeviceType());
	}
}

Screenshots: