  1. /** Zadanie Z25.10 */
  2. import java.util.Scanner;
  3. import java.io.File;
  4. import java.io.PrintWriter;
  5. class Z25_10 { 
  6.     public static void main(String args[]) throws Exception {
  7. 	    Scanner cin = new Scanner(System.in);
  8. 	    System.out.print("Podaj nazw pliku bez rozszerzenia: ");
  9. 	    String filename = cin.nextLine();
 10. 	    cin.close();
 11.         File file = new File(filename+".java");
 12.         if (file.exists()) {
 13. 	        PrintWriter fout 
 14.                 = new PrintWriter(new File(filename+".txt"));
 15.             Scanner fin = new Scanner(file);
 16.             String s;
 17.             int n = 0;
 18.             while(fin.hasNextLine()) { 
 19. 	            s = fin.nextLine();
 20.                 fout.printf("%3d. %s\r\n", ++n, s); 
 21.             } 
 22.             fin.close(); 
 23.             fout.close();
 24.         } else 
 25.             System.out.println("Nie znaleziono pliku: "+filename+".java");
 26.     } 
 27. }
