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Untitled safest cryptocurrency exchange

From Funky Hamerkop, 7 Years ago, written in Java.
URL https://pastebin.pl/view/bd38195f
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  1. public class InputOutput {
  2.     public static void main(String[] args) throws FileNotFoundException{
  3.         PrintWriter zapis = new PrintWriter("imiona.txt");
  4.         File file = new File("imiona.txt");
  5.         Scanner zPliku = new Scanner(file);
  6.         Scanner input = new Scanner(System.in);
  7.  
  8.         System.out.println("Jak się nazywasz?");
  9.         String a = input.nextLine();
  10.         char temp = a.charAt(0);
  11.  
  12.         if (Character.isDigit(temp)){
  13.             System.out.println("To nie jest imie");
  14.         }else{
  15.             zapis.println(a);
  16.             zapis.close();
  17.         }
  18.  
  19.         System.out.println("Witaj "+zPliku.nextLine());
  20.     }
  21. }
  22.  

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