File IO basics more than 1 problem with streams any help?

Question

Have console program that i've built up in steps from reading args from the command line and displaying the text to now wanting to learn to read and write to a disk file.
i know i have a number of errors but believe it's down to something i am not understanding with the use of datastreams.
a snippit of code is below.
  if (args.length > 0)
            // Read what the use has entered and keep for later use
        for (int i=0; i < args.length; i++)
          text = text + args;
try
//path is define further up as c:\my projects\
System.out.print (path);
//create a file object to point to the file the user has given for reading to
// the file and another to read the file back in
File fileIn = new File (path,text);
// File fileOut = new File (path,text);
// Not sure if this is required!!
fileIn.createNewFile();
// thefileOut.createNewFile();
//Thought this would be the right way of of creating the stream
// DataOutputStream thefileIn = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(fileIn)));
// DataOutputStream thefileOut = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(fileOut)));
//errors on exists and delete methods
if (fileIn.exists())
fileIn.Delete();
catch(IOException e)
{            // also errors in the getmessage
System.out.print("Error occured!"+ fileIn.getmessage());
the errors i am getting are to do with the DELETE method
The Getmessage method
Exits method
i have others but if i can get help with these then i might be able to fix the others.
thanks

Answer 1

complete program code below :)
import java.io.*;
public class mysimpleio
  String thefilename = "";
//  String ToFile(String thefilename);
//  String FromFile(String thefilename);
  public static void main(String[] args)
    String text = "";
    String path = "e:\\my_project\\crm\\";
    if (args.length == 0)
        System.out.println("No file name, Exiting program!");
    if (args.length > 0)
        for (int i=0; i < args.length; i++)
          text = text + args;
try
System.out.print (path);
File fileIn = new File (path,text);
// File fileOut = new File (path,text);
fileIn.createNewFile();
// thefileOut.createNewFile();
// DataOutputStream thefileIn = new DataOutputStream(new
BufferedOutputStream(new FileOutputStream(fileIn)));
// DataOutputStream thefileOut = new DataOutputStream(new
BufferedOutputStream(new FileOutputStream(fileOut)));
if (fileIn.exists())
fileIn.delete();
catch(IOException e)
System.out.print("Error occured!"+ fileIn.getmessage());
ToFile(text);
System.out.print("\n okay so you entered "+ text);
if (!fileIn.exists())
System.out.println("Sorry no file found matching " + text);
else
if (fileIn.exists())
FromFile(text);
// put data to a Disk File
static void ToFile(String thefilename)
// thefileOut.writeUTF(path);
System.out.println("Data would be written to file Now! "
+thefilename);
//Read data From a Disk File
static void FromFile(String thefilename)
fileIn.readUTF(path);
System.out.println(" Data would be Read From file Now! "
+thefilename);
Errors are....
can not resolve symbol
E:\my_project\crm>javac mysimpleio.java
mysimpleio.java:43: cannot resolve symbol
symbol : variable fileIn
location: class mysimpleio
System.out.print("Error occured!"+ fileIn.getmessage());
^
mysimpleio.java:49: cannot resolve symbol
symbol : variable fileIn
location: class mysimpleio
if (!fileIn.exists())
^
mysimpleio.java:53: cannot resolve symbol
symbol : variable fileIn
location: class mysimpleio
if (fileIn.exists())
^
mysimpleio.java:70: cannot resolve symbol
symbol : variable path
location: class mysimpleio
fileIn.readUTF(path);
^
mysimpleio.java:70: cannot resolve symbol
symbol : variable fileIn
location: class mysimpleio
fileIn.readUTF(path);
^
5 errors
E:\my_project\crm>