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  1. public class Question6Main {
  2.  
  3.    
  4.     public static void main(String[] args) {
  5.         ElectricalProduct ep=new ElectricalProduct(200, 30, 5, "abc", 123, 2100);
  6.         ep.display();
  7.  
  8.     }
  9. //
  10. public class ElectricalProduct extends Product {
  11. int wattage;
  12. int voltageRange;
  13. int price;
  14.  
  15.  
  16. ElectricalProduct(int wattage,int voltageRange,int productId,String name,int categoryId,int unitPrice){
  17.     super(productId, name, categoryId,unitPrice);
  18.     this.wattage=wattage;
  19.     this.voltageRange=voltageRange;
  20.    
  21.    
  22. }
  23.  
  24. void display()
  25. {
  26.     System.out.println("Before modifications");
  27.     System.out.println("Product id "+productId+" product name: "+name+" category id "+categoryId+" unit price "+unitPrice+" wattage"+wattage+" voltageRange"+voltageRange);
  28.     Product p=new Product();
  29.     p.unitPrice=10;
  30.     wattage=400;
  31.     System.out.println("After Modifications");
  32.     System.out.println("Product id "+productId+" product name: "+name+" category id "+categoryId+" unit price "+p.unitPrice+" wattage"+wattage+" voltageRange"+voltageRange);
  33. }
  34.  
  35. }
  36. //
  37.  
  38.  
  39. public class Product
  40. {
  41.     int productId;
  42.     String name;
  43.     int categoryId;
  44.     int unitPrice;
  45.    
  46.     Product(){}
  47.      Product(int productId,String name,int categoryId,int unitPrice)
  48.     {
  49.         this.categoryId=categoryId;
  50.         this.name=name;
  51.         this.productId=productId;
  52.         this.unitPrice=unitPrice;
  53.     }
  54.      
  55.      
  56.    
  57.    
  58.    
  59. }
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