generating the output text file through java IO

[naresh saxena]

-2 down vote favorite


I have developed a java code that reads files from the folder chosen by the user. It displays how many lines of code are in each file, it reads only .java filesonly and final outcome is shown on console , I was thinking that output to be get displayed on console but along with a text file conataing the same information to be get stored on desktop also, please advise how to that and the name of the file that is generated its name is to be based on timestamp lets assume that name of the output file would be 'output06282012' and that text file should contain the same information that is shown on the console , here is my piece of code...

public static void main(String[] args) throws FileNotFoundException {

        JFileChooser chooser = new JFileChooser();
        chooser.setCurrentDirectory(new java.io.File("C:" + File.separator));
        chooser.setDialogTitle("FILES ALONG WITH LINE NUMBERS");
        chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
        chooser.setAcceptAllFileFilterUsed(false);
                if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION)
        {      Map<String, Integer> result = new HashMap<String, Integer>();
             File directory = new File(chooser.getSelectedFile().getAbsolutePath()); 
             int totalLineCount = 0;
             File[] files = directory.listFiles(new FilenameFilter(){
                  @Override
                  public boolean accept(File directory, String name) {
                      if(name.endsWith(".java"))
                      return true;
                    else
                      return false;              
                  }
                }
   );
              for (File file : files)
            {
                if (file.isFile())
                {    Scanner scanner = new Scanner(new FileReader(file));
                    int lineCount = 0;
                     try
                    { for (lineCount = 0; scanner.nextLine() != null; lineCount++) ;
                          } catch (NoSuchElementException e)
                    {   result.put(file.getName(), lineCount);
                    totalLineCount += lineCount;  
                                    }


                } }
              System.out.println("*****************************************");
              System.out.println("FILE NAME FOLLOWED BY LOC");
              System.out.println("*****************************************");

            for (Map.Entry<String, Integer> entry : result.entrySet())
            {   System.out.println(entry.getKey() + " ==> " + entry.getValue());
            }
            System.out.println("*****************************************");
            System.out.println("SUM OF FILES SCANNED ==>"+"\t"+result.size()); 
            System.out.println("SUM OF ALL THE LINES ==>"+"\t"+ totalLineCount);

             }     

    }

Please advise

[fred rosenberger]

1) construct the file name you want to use
2) open the file for write
3) each time you call a System.out.println(), make a similar call to write the same message to the file
4) when you are all done, make sure you close the file handle.

[naresh saxena]

fred rosenberger wrote:1) construct the file name you want to use
2) open the file for write
3) each time you call a System.out.println(), make a similar call to write the same message to the file
4) when you are all done, make sure you close the file handle.

I have an rough idea something like this

try{

 java.util.Date date= new java.util.Date();
 System.out.println(new Timestamp(date.getTime())); 

BufferedWriter out = new BufferedWriter(new FileWriter("C://Desktop//output"+new Timestamp(date.getTime())+".txt"));

out.write("some information");

out.close; 

}catch(IOException e){
  e.printStackTrace();
 }

but could you please show in code terms as I HAVE DONE

[Michael Dunn]

where would you like it posted?

http://stackoverflow.com/questions/11255610/generating-the-output-file-through-java-io

[Stuart A. Burkett]

naresh saxena wrote:but could you please show in code terms as I HAVE DONE

Show what ? You appear to know know how to write to a file, you appear to know how to get the data that you want to write to that file, so just put it all together.