public void buildApp(int fn)
    throws IOException
  {
    FileReader fr = new FileReader(appDir+fn+".txt");
    BufferedReader textReader = new BufferedReader(fr);
    
    int numberOfTextLines = 3;
    int numberOfNumberLines = 2;
    String[] textData = new String[numberOfTextLines];
    int[] numberData = new int[numberOfNumberLines];
    for (int i = 0; i < numberOfTextLines + numberOfNumberLines; i++) {
        
      textData[i] = textReader.readLine();
            
    }
    this.appName = textData[0];
    this.dev = textData[1];
    this.cost = numberData[2];
    this.appDesc = textData[3];
    this.pop = numberData[4];
    
    textReader.close();
      
  }