Specific character in a sequential file

Question

i have this file
H;001;t;2;3;1;y;y;n;flgjdfl;2000
H;002;t;2;3;1;y;y;n;flgjdfl;2000
H;003;f;2;3;1;y;y;n;flgjdfl;2000
i want to check whether the third field is t/f.how do i check it?

Answer 1

ok i have written the whole code but it is not working
the situation is that:
i read a file ,check for t/f if "f" then my count should increase and this count number should display in the textbox.it is noy working,my text box is empty when i click the search button.
public void searchLand()
        int count=0;
        result=new JTextField(10);
  try
         FileInputStream filein = new FileInputStream("house.data");
        DataInputStream in = new DataInputStream(filein);
          do
                String line;
                line = in.readLine();
                 if ( line.trim().charAt(6) == 'f' )
                    count++;
                    result.setText(Integer.toString(count));
                  filein.close();
            while(true);
            catch(IOException e)
            else
            result.setText("");
if(actionEvent.getActionCommand().equals("searchable"))
            searchLand();
        }