The objective of this lab is to write a Java program that use inheritance. Inheritance is when a subclass is derived from a superclass. it is the same as the concept of inheritance from one family member to another.

Code:

Lab4;

public class MobileDevice {
	private String deviceType;

	public MobileDevice() {

		deviceType = "Mobile Device";
		// TODO Auto-generated constructor stub
	}

	public String getDeviceType() {
		return deviceType;
	}

	public void setDeviceType(String deviceType) {
		this.deviceType = deviceType;
	}

}

Lab4;

public class SmartPhone extends MobileDevice {

	private String deviceType;
	public SmartPhone() {
		deviceType = "SmartPhone";
		// TODO Auto-generated constructor stub
	}
	public String getDeviceType() {
		return deviceType;
	}
	public void setDeviceType(String deviceType) {
		this.deviceType = deviceType;
	}

}

Lab4;

public class MobileDeviceClient {	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		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());
	}
}

Lab4;

public class iPhone extends SmartPhone{

	public iPhone () {
	}

	@Override

	public String getDeviceType() {
		return deviceType = "Mobile Device -> Smart Phone -> IPhone";
	}

}

Lab4;

public class Android extends SmartPhone {

	public Android() {

	}
	@Override

	public String getDeviceType () {
		return deviceType = "Mobile Device -> Smart Phone -> Android";
	}

}

Lab4;

public class WindowsPhone extends SmartPhone {

	public WindowsPhone() {

	}

	@Override
	public String getDeviceType() {
		return deviceType = "Mobile Device -> Smart Phone -> Windows Phone";
	}

}

Screenshots: