[Help] How to log chat

I need to add logging functionality to my plugin so that it logs everything everyone says into a file. Can anyone help?

I need to know:

• How to create the file it logs all the messages into
• How to write the messages into the file

Help please!

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

If your new to plugins, don't tamper with file creation until you get the basics down. If not, here's my little part of a plugin:

Code:JAVA

 
    File log = new File(this.getDataFolder(),  new SimpleDateFormat("MM-dd-yyyy").format(Calendar.getInstance().getTime()) + "log.txt");
 
    protected void edit(File f, String plyr, String target, String msg, Boolean command){
        try {
            BufferedWriter write = new BufferedWriter(new FileWriter(f, true));
            if(override){
                write = new BufferedWriter(new FileWriter(f, false));
            }
            write.newLine();
            if(command.equals(true)){
                write.write(plyr + " : Targeted " + target + " to execute " + msg);
            } else {
                write.write(plyr + " : Targeted " + target + " to say " + msg);
            }
            write.flush();
            write.close();
        } catch (FileNotFoundException e) {
            server.broadcastMessage(ChatColor.RED + "ForceChat failed to access it's log file. Reason: Does not exist!");
            e.printStackTrace();
        } catch(IOException e) {
            System.out.print("Unable to access file. Does the file exist? File:" + f.getName());
            e.printStackTrace();
        }
    }
 

Again, this is intermediate/advanced (most likely intermediate-beginner)