reading a file

[oll3i]

why

while((strLine = br.readLine()) != null)

reads the file 3 times ?

[JosAH]

why

while((strLine = br.readLine()) != null)

reads the file 3 times ?

Who knows? Maybe you open, read and close the file in a loop you didn't show us?

kind regards,

Jos

[oll3i]

 private List<String> getKlienci(){
	  
		try{
    	    
    	    
    	    BufferedReader br = new BufferedReader(new FileReader("klienci.txt"));
    		       
    	    
    	    
    	    
    	
    	    
    	    String strLine ;
    	  
    	    String nazwa;
    	    String[] get_nazwa;
    	 
    	  while((strLine = br.readLine()) != null)   {
    		  System.out.println(strLine);
    		  get_nazwa=strLine.split(":");
    	       if(get_nazwa[0].equals("nazwa")){		    			     nazwa=get_nazwa[1];
    	              klienci_z_pliku.add(nazwa); }   
    	  }
    	  
    	
    	
    	  
    	    br.close();
    	  }catch (FileNotFoundException e) {
    	 System.err.println("File not found!");
    	  }catch (IOException e) {
    	  e.printStackTrace(); 
    	  }catch (Exception e)  {
          e.printStackTrace();  }	
	  
	 return klienci_z_pliku; 
  }

[JosAH]

 private List<String> getKlienci(){
	  
		try{
    	    
    	    
    	    BufferedReader br = new BufferedReader(new FileReader("klienci.txt"));
    		       
    	    
    	    
    	    
    	
    	    
    	    String strLine ;
    	  
    	    String nazwa;
    	    String[] get_nazwa;
    	 
    	  while((strLine = br.readLine()) != null)   {
    		  System.out.println(strLine);
    		  get_nazwa=strLine.split(":");
    	       if(get_nazwa[0].equals("nazwa")){		    			nazwa=get_nazwa[1];
    	              klienci_z_pliku.add(nazwa); }   
    	  }
    	  
    	
    	
    	  
    	    br.close();
    	  }catch (FileNotFoundException e) {
    	 System.err.println("File not found!");
    	  }catch (IOException e) {
    	  e.printStackTrace(); 
    	  }catch (Exception e)  {
          e.printStackTrace();  }	
	  
	 return klienci_z_pliku; 
  }

I still can't tell what the cause might be; are you calling that method three
times from different places? 'klience_z_plik u' is a member variable so calling
this method three times keeps on adding Strings three times to the same list.
Try to clear that list first before you start reading from that file and see what
happens ...

kind regards,

Jos

[oll3i]

i call that method only once
and it still reads the file now 2 times

[JosAH]

Add a klienci_z_pliku .clear() near the top of the method that reads from the
file and see what happens then.

kind regards,

Jos

[oll3i]

i added clear before i read from the file and add to the list but it doesnt help

[oll3i]

i solved it :) thank you

[JosAH]

i solved it :) thank you

What was the bug then?

kind regards,

Jos