Ledger Nano X - The secure hardware wallet
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a guest Mar 29th, 2020 559 Never
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  1. //שליו שאולוב
  2. public class Book_store {
  3.  
  4.     public static void main(String[] args) {
  5.  
  6.         Book b1 = new Book("fortnite", "PS4", 2018, 50.0);
  7.         b1.upOrDownPrice(10);
  8.         Book b2 = new Book("GTAV", "PS4", 2014, 150.0);
  9.         b2.upOrDownPrice(-10);
  10.         Book b3 = new Book("warzoon", "PS4", 2020, 40.0);
  11.         b3.upOrDownPrice(10);
  12.  
  13.         int newBook=0;
  14.  
  15.         if(b1.newOrOldBook(2020)) {
  16.             newBook++;
  17.         }
  18.         if(b2.newOrOldBook(2020)) {
  19.             newBook++;
  20.         }
  21.         if(b3.newOrOldBook(2020)) {
  22.             newBook++;
  23.         }
  24.         System.out.println("the book "+b1.getName()+" is cost "+b1.getPrice());
  25.         System.out.println("the book "+b2.getName()+" is cost "+b2.getPrice());
  26.         System.out.println("the book "+b3.getName()+" is cost "+b3.getPrice());
  27.         System.out.println("there is "+newBook+" new book");
  28.  
  29.     }
  30.  
  31. }
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