Question

in java 8

Design classes that store the information about various pieces of furniture. The system will support at least these pieces: table, chair and lamp. For each piece of furniture, the system will store some attributes For a table, it will be at least width, length, height, photo and price. For a chair, it will be at least price, photo, height and diagonal. For a lamp, it will be at least the number of bulbs, photo and price. Each piece of furniture will provide a method that prints all the information about that piece. For example, a chair will be printed as follows: Chaix, id: 1, photo: chairi.png, price: 11.99, diagonal: 6, height: 12 A table will be printed as follows: Table, id: 2, photos tablel.png. Price: 12.48, width: 10, length: 12, height: 8 And a lamp as follows: Lamp, id: 3, photo: Lamtpl.png. Price: 8.75, bulbs: 2 Besides the individual pieces, the system will support sets of pieces. Each set will have a name, any number of pieces of furniture, and a price and will provide a method that prints all the information about that set. For example, a kitchen set will be printed as follows: Kitchen set Table, id: 4, photo: table2.png, width: 11, Length: 36, height: 25 Chair, 10: 5, photo: chair2.png, diagonal: 5, he:ght: 10 Chair, id: 5, photo: chai2.png, diagonal. 5) height: 20 price: 25.99 Each class will provide suitable constructors and methods. Each piece of furniture will have a unique 10 that will be assigned automatically, In addition to requirements specified above, your code will be assessed using the following criteria: 1. Proper use of inheritance 2. Proper use of abstract classes 3. Proper use of abstract methods 4. Proper use of final 5 Proper use of overriding 6. Proper use of overloaded constructors

Answer 1

import java.util.ArrayList;

// Use of abstract class

public abstract class Furniture {

    String name;

    double price;

    String photo;

    // USE OF ABSTRACT METHODS

    

    abstract void display();

    abstract String getDetails();

}

// USE OF INHERITANCE

class Chair extends Furniture{

   

    static int id_iterator = 1;

     

    int height,diagonal;

    int id;

    

    //USE OF FINAL VARIABLE

    final String details;

    //USE OF CONSTRUCTOR OVERLOADING

    Chair(String photo, double price ,int height,int diagonal){

        this.diagonal =diagonal;

        this.height =height;

        this.photo =photo;

        this.price =price;

        this.name ="Chair";

        this.id = id_iterator;

        id_iterator +=1;

        //details = "";

        details ="Chair ," +"id : "+this.id + ", photo : "+this.photo +", diagonal : " + this.diagonal + ", height : "+this.height;

    }

    

    // USE OF OVERRIDING

    void display(){

        System.out.println("Chair ," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", diagonal : " + this.diagonal + ", height : "+this.height);

    

    }

   

    public String getName(){

        return this.name;

    }

   

    public String getDetails(){

        return this.details;

    }

}

class Table extends Furniture{

   

    static int id_iterator = 1;

    

    int height,width,length;

    int id;

    final String details;

    Table(String photo, double price ,int height,int width,int length){

        this.length =length;

        this.width =width;

        this.height =height;

        this.photo =photo;

        this.price =price;

        this.name ="Table";

        this.id = id_iterator;

        id_iterator +=1;

        details = "Table ," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", width : " + this.width + ", length : "+this.length + " height : "+this.height;

    }

    

    void display(){

        System.out.println("Table ," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", width : " + this.width + ", length : "+this.length + " height : "+this.height);

    

    }

    public String getName(){

        return this.name;

    }

    public String getDetails(){

        return this.details;

    }

}

class Lamp extends Furniture{

   

    static int id_iterator = 1;

    final String details;

    int id,bulbs;

    

    Lamp(String photo, double price ,int bulbs){

        this.bulbs =bulbs;

        this.photo =photo;

        this.price =price;

        this.name ="Lamp";

        this.id = id_iterator;

        id_iterator +=1;

        details ="Lamp ," +"id : "+this.id + ", photo : "+this.photo  + ", bulbs : "+this.bulbs;

    }

    

    public String getName(){

        return this.name;

    }

    void display(){

        System.out.println("Lamp ," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", bulbs : "+this.bulbs);

    

    }

   

    public String getDetails(){

        return this.details;

    }

}

class Sets{

  String name;

  ArrayList<Furniture> mySet ;

  double total=0.0;

  Sets(String name){

      this.name =name;

      mySet = new ArrayList<>();

  }

  

  void addToSet(Furniture myFurniture){

      mySet.add(myFurniture);

  }

   

  void displaySet(){

      System.out.println(this.name + "(Set)");

      for(Furniture f : mySet){

        total += f.price;

    

         System.out.println(f.getDetails());

      }

      System.out.println("price :"+ this.total);

  }

}

class Test_Furniture{

public static void main(String args[]){

  Chair c = new Chair("chair1.png", 11.99, 6, 12);

  Chair c1 = new Chair("chair2.png", 12.34, 7, 13);

  Table t =new Table("table1.png", 12.48, 10, 12, 8);

  Lamp l = new Lamp("lamp1.png", 8.75, 2);

  Sets s = new Sets("Kitchen");

  s.addToSet(c);

  s.addToSet(t);

  s.addToSet(l);

  c1.display();

  c.display();

  t.display();

  l.display();

  s.displaySet();

}

}

NOW HAVE A LOOK AT IDE CODE WITH PROPER INDENTATTION

1 File Edit Selection View Go Run Terminal Help • Furniture.java - loveEditor - Visual Studio Code Х Furniture.java Temperature.java Strinf_program.java Stack_array.java on.java makeGoFdictionary.py display_string.java HomeworkLib_pyhton.py D: > DS_questions > Furniture.java > $ Chair > Chair(String, double, int, int) 1 import java.util.ArrayList; 2 3 4 // Use of abstract class 5 6 public abstract class Furniture { 7 String name; 8 double price; 9 String photo; 10 11 // USE OF ABSTRACT METHODS 12 13 abstract void display(); 14 abstract String getDetails(); 15 16 } A 1.7

on.java А File Edit Selection View Go Run Terminal Help • Furniture.java - loveEditor - Visual Studio Code makeGoFdictionary.py display_string.java e HomeworkLib_pyhton.py Furniture.java Temperature.java Strinf_program.java Stack_array.java D: > DS_questions > Furniture.java > Es Chair > Chair(String, double, int, int) 20 class Chair extends Furniture{ 21 22 static int id_iterator = 1; 23 24 int height, diagonal; 25 int id; 26 27 //USE OF FINAL VARIABLE 28 29 final String details; 30 31 //USE OF CONSTRUCTOR OVERLOADING 32 33 Chair(String photo, double price , int height, int diagonal){ 34 this.diagonal -diagonal; 35 this.height =height; 36 this.photo =photo; 37 this.price =price; 38 this.name ="Chair"; 39 this.id = id_iterator; 40 id_iterator +=1; 41 //details 42 details ="Chair," +"id : "+this.id + ", photo : "+this.photo +", diagonal : + this.diagonal + ", height : "+this.height; 43 44 45 // USE OF OVERRIDING 46 47 void display(){ 48 System.out.println("Chair," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", diagonal : + this.diagonal + 49 50 }

public String getName(){ return this.name; } 52 53 54 55 56 57 58 59 public String getDetails(){ return this.details; } }

60 61 class Table extends Furniture{ static int id_iterator = 1; 62 63 64 65 66 67 68 69 int height,width, length; int id; final String details; 0 70 71 72 73 Table(String photo, double price , int height, int width, int length) { this.length =length; this.width =width; this.height -height; this.photo =photo; this.price =price; this.name ="Table"; this.id = id_iterator; id_iterator +=1; 74 WA 75 76 77 78 79 details = "Table ," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", width : " + this.width + ", length : "+thi: } 80 81 82 83 84 85 void display() { System.out.println("Table ," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", width : BE + this.width + ", lengt 86 87 88 } public String getName() { return this.name; } 89 O 11 90

91 92 93 public String getDetails({ return this.details; } TC 94 } 95 96 97 98 99 100 class Lamp extends Furniture{ А 101 102 103 static int id_iterator = 1; final String details; int id, bulbs; 104 105 106 107 108 109 110 111 Lamp (String photo, double price , int bulbs) { this.bulbs =bulbs; this.photo =photo; this.price =price; this.name ="Lamp"; this.id = id_iterator; id_iterator +=1; details ="Lamp," +"id : "+this.id + ", photo : "+this photo + ", bulbs : "+this.bulbs; } 112 113 114 115 116 public String getName() { return this.name; } 117 118 119 120 void display() { System.out.println("Lamp," +"id : "+this.id + ", photo : "+this.photo + ", price : "+ this.price + ", bulbs : "+this.bulbs); 121 122 Dathon 39264bit an Inn Col 25 Sacer. TITE 8 O CRIE lay I-SE. 11 n

public String getDetails(){ return this.details; } } . class Sets{ String name; ArrayList<Furniture> mySet ; double total=0.0; Sets(String name) { this.name =name; mySet = new ArrayList<>(); } A 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 void addToSet (Furniture myFurniture) { mySet.add(myFurniture); } void displaySet({ System.out.println(this.name + "(Set)"); for(Furniture f: mySet){ total += f.price; System.out.println(f.getDetails()); } System.out.println("price :"+ this.total); } }

} System.out.println("price :"+ this.total); } go 150 151 152 153 154 155 156 } class Test_Furniture{ B. Run | Debug public static void main(String args[]) { А Chair c = new Chair("chair1.png", 11.99, 6, 12); Chair c1 = new Chair("chair2.png", 12.34, 7, 13); Table t =new Table("table1.png", 12.48, 10, 12, 8); Lamp 1 = new Lamp ("lamp1.png", 8.75, 2); 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 Sets s = new Sets("Kitchen"); s.addToSet(); s.addToSet(t); s.addToSet(1); c1.display(); c.display(); t.display(); 1.display(); s.displaySet(); } 8 }

NOW HAVE A LOOK AT THE OUTPUT SCREEN

class Test_Furniture{ 155 156 Run Debug PROBLEMS 4 OUTPUT DEBUG CONSOLE TERMINAL 4: Java Process Console v + А PS C:\Users\chirag.arora\loveEditor> cd 'c:\Users\chirag.arora\loveEditor'; & 'c:\Users\chirag. arora\.vscode\extensions\vscjava.vscode-java-debug-0.28.0\scripts\launcher.bat' 'C:\Pr ogram Files\Zulu\zulu-11\bin\java.exe' '-Dfile.encoding=UTF-8' '-cp' 'C:\Users\chirag.arora\AppData\Roaming\Code\User\workspaceStorage\1c2408ee2f2188618df263224cc83de8\redhat.java\jd t_ws\jdt.ls-java-project\bin' 'Test_Furniture' Chair ,id : 2, photo : chair2.png, price : 12.34, diagonal : 13, height : 7 Chair ,id : 1, photo : chair1.png, price : 11.99, diagonal : 12, height : 6 Table ,id : 1, photo : table1.png, price : 12.48, width : 12, length : 8 height : 10 Lamp ,id : 1, photo : lamp1.png, price : 8.75, bulbs : 2 Kitchen (Set) Chair ,id : 1, photo : chair1.png, diagonal : 12, height : 6 Table ,id : 1, photo : table1.png, price : 12.48, width : 12, length : 8 height : 10 Lamp ,id : 1, photo : lamp1.png, bulbs : 2 price :33.22 PS C:\Users\chirag.arora\loveEditor> CISE A

HOPE I HELPED YOU.