How to replace single backslash(\) to double backslash(\\)

Question

Hi
I want to replace single backslash to double backslash from the string.
Code is here
String data="File name :\n.txt;File name:\t.txt";               
data = data.replace("\\","\\\\");
System.out.println("-->" +data);
i tried to this code but its not working. Help me if anyone is know.
Please reply me asap.
Thanks

Answer 1

DVekaria wrote:
Are you not getting my question.Obviously not. That's why we've asked you to clarify it. Twice, at least.
whatever data contenting in Variable, it must print as its on the screen.This code does that.
String s = "a\nb\tc;"
System.out.println(s);The variable s contains a reference to a String object. That String object holds 5 characters: 'a', newline, 'b', tab, 'c'. The println prints out exactly what's in that String--those 5 characters. Note that there is not even one single backslash in that String.
a
b cThis is exactly what you asked for.
Now let's say I create a file in Notepad, and I type the following, and then save it:
a\nb\tcThat file contains 7 characters. 'a', '\', 'n', 'b', '\', 't', 'c'. If I read that file with Buffered reader, it will give me a String object with those same 7 charcters. If I print it out it will print out those 7 characters.
a\nb\tcNote that in both cases, I am printing out exactly what is in the String.
Think carefully on what is the same and what is different between those two cases, and use it to form a clearer definition of your problem. Remember, we want to know what you're trying to accomplish. Just saying "I want to replace backslashes" tells us how you're trying to solve your problem.