Create a java package called Laptops.

1. Create Main.java as follows

import laptops.*; 

public class Main { /* 

 * ---------------------------------------------------------------- -------- 

 * Task: Follow the steps described below, and gradually uncomment the 

 * snippets of code below the CHECK YOUR CODE tag, one by one, to check 

 * your implementation of classes. 

 * ---------------------------------------------------------------- -------- 

 * 0. Make sure you maintain the project architecture as it is: 

 * (default package) --> Main.java 

 * laptop --> Laptop.java, Mac.java, Lenovo.java 

 * * 1. Start with the class 'Laptop' and complete it. * * 2. Create another class, 'Mac'\ * 2.1. This class inherits everything from 'Laptop'. (It 

extends 'Laptop'.) *2.2. This class should have one additional field; for 

Macbooks, we need * a field to indicate the model, whether it is a "-", 

"pro", or "air". * 2.3. Make sure all constructors and methods work 

properly with the new *field as well. 

 * 3. Create yet another class, 'Lenovo', also extending 'Laptop'. 

 * 3.1. This clss inherits everything from 'Laptop'. (It extends 'Laptop'.) 

 * 3.2. This class should have one additional field; for Lenovo laptops we 

 * need a field which indicates which operating system this device comes 

 * with. It could be Windows, Linux, Chrome, or None. 

 * 3.3. Make sure all the constructors and methods work properly with the new 

 * field as well. 

 * 4. Make sure onc cannot create an object of type 'Laptop'. Only 'Mac' or 'Lenovo' 

 * objects can be created. */ 

 double myMacPrice = 1800; double myMacWeight = 2.03; double myMacScreen = 12.0; String myMacModel = "air"; 

 double myLenovoPrice = 1650; double myLenovoWeight = 2.45; 

 double myLenovoScreen = 12.4; String withOS = "Linux"; //+++++++++++++++++++++++ CHECK YOUR CODE +++++++++++++++++ 

++++++++ /*

 Laptop myLaptop = new Mac(); myLaptop.info(); */ /* 

 myLaptop = new Mac(myMacPrice, myMacWeight, myMacScreen, myMacModel); 

 myLaptop.info(); */ /* Laptop myLenovoLaptop = new Lenovo(); myLenovoLaptop.info(); 

 */ /* myLenovoLaptop = new Lenovo(myLenovoPrice, myLenovoWeight, 

myLenovoScreen, withOS); myLenovoLaptop.info(); */ 

}

2. Create Package Called Laptops 3. Create Classes as follows 

4. Create Laptop.java package laptops;

Laptop.java;

Lenovo.Java;

Mac.java;

public class Laptop { /****************************************** 

* FIELDS

 *******************************************/ double price; double weight; double screenSize; /****************************************** 

 * CONSTRUCTOR 

 *******************************************/ /* 

 * Add the constructors here * */ 

 /****************************************** * METHODS *******************************************/ 

 /* * Add a method to print all the information (fields) * */ 

}

 **************************************************************** INHERITANCE 

**************************************************************** 

5. Create Lenovo.java package laptops; public class Lenovo extends Laptop {

 /****************************************** * FIELDS 

 *******************************************/ /* 

 * Add the fields here * (For Lenovo laptops we need a field which indicates * which operating system this device comes with.) */ 

 /****************************************** * CONSTRUCTOR *******************************************/ 

 /* * Add the constructors here * */ 

 /****************************************** * METHODS *******************************************/ 

 /* * Add a method to print all the information (fields) * */ 

}

6. Create Mac.java package laptops; public class Mac extends Laptop {

 /****************************************** * FIELDS *******************************************/ 

 /* * Add the fields here * (For Macbooks, we need a field to indicate the model * whether this model is a "-", "pro", or "air".) */ 

 /****************************************** * CONSTRUCTOR 

*******************************************/ /* 

 * Add the constructors here * */ 

 /****************************************** * METHODS *******************************************/ 

 /* * Add a method to print all the information (fields) * */ 

}