how to replace ' \' with '/' in a java string

Question

I have generated a file name and stored it in a String variable path have tried using

path=path.replaceAll(‘\’,’,’)

But it is not working. Can someone help me with this?

Answer 1

replaceAll() needs Strings as parameters. So, if you write

path=path.replaceAll(‘\’,’/’);

It fails because you should have written

path=path.replaceAll(“\”,”/”);

But this also fails because character ‘\’ should be typed ‘\\’.

path = path.replaceAll("\\", "/");

And this will fail during execution giving you a PatternSyntaxException, because the first String is a regular expression. So, writing it as a RegEx:

path = path.replaceAll("\\\\", "/");

Is what you were looking for.

To make optimal your core, you should make it independent of the Operating System:

path = path.replaceAll("\\\\", File.separator);

But this fails and is throwing a StringIndexOutOfBoundsException (I don't know why). It works if you use replace() with no regular expressions:

path = path.replace("\\", File.separator);

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