How to include file-separator in fileName?

Question

I'm retrieving the file name from a function and that function returns me the string and now I can't change this.
String fileName="C:\jdk1.2\hello.java"
Now next with this file Name I'm making a file object
File f=new File(fileName);
FileInputStream in=new FileInputStream(f);
but this gives me error..that it doesn't found the specified the file given...
so this means I must give the separator as C:\\jdk1.2\hello.java
but I can't change the value returned to me by the function...
So this means that I have to make a function replace which converts '\' to '\\'
String newfileName=replace(fileName);
so please can anybody tell me how to write this funcion? Actually I can't use replace fn. of String class, as it says that '\' is invalid escape character...u try it and compile the result and tell me
thanx in advance for the favourable response

Answer 1

mmmmmhhh... hi!
I don't whant to be mean but I did't understand what's the problem at all? Are you trying to implement a new method to replace the '\' with '\\' in Strings????. Let me guess:
private static String replace(String input) {
String output = null;
//.. do something;
return output;
But beware: you cannot call this method as, say,
String path = replace("C:\My Documents\User\texts\file.dat");
to get "C:\\My Documents\\User\\texts\\file.dat"... First the argument is invalid, and second you're missing the fact that what you want is to preprocess the text of the java SOURCE FILE, not a String object to handle like ***text in you source file***...
Just write your strings like "C:\\My Documents\\User\\Home\\docs.txt" or "C:/My Documents/User/Home/docs.txt" (I personally use the later)
But please see what's the problem:
"C:\My Documents\User\Home\docs.txt"
is not even a String!!!
If you do
System.out.println("C:\\My Documents\\User\\Home\\docs.txt");
System.out.println("C:/My Documents/User/Home/docs.txt");
System.out.println("C:\\\\My Documents\\\\User\\\\Home\\\\docs.txt");
the output will be
C:\My Documents\User\Home\docs.txt
C:/My Documents/User/Home/docs.txt
C:\\My Documents\\User\\Home\\docs.txt
... hope I didn't misunderstand the question nor did I oversimplify the issue, I just guess you got lost with the concept...