String replace a Backslash

Question

How can I do a string replace of a back slash.

Input Source String:

sSource = "http://www.example.com\/value"; 

In the above String I want to replace "\/" with a "/";

Expected ouput after replace:

sSource = "http://www.example.com/value"; 

I get the Source String from a third party, therefore I have control over the format of the String.

This is what I have tried

Trial 1:

sSource.replaceAll("\\", "/"); 

Exception Unexpected internal error near index 1 \

Trial 2:

 sSource.replaceAll("\\/", "/"); 

No Exception, but does not do the required replace. Does not do anything.

Trial 3:

 sVideoURL.replace("\\", "/");  

No Exception, but does not do the required replace. Does not do anything.

Answer 1

sSource = sSource.replace("\\/", "/"); 

• String is immutable - each method you invoke on it does not change its state. It returns a new instance holding the new state instead. So you have to assign the new value to a variable (it can be the same variable)
• replaceAll(..) uses regex. You don't need that.

Answer 2

Try replaceAll("\\\\", "") or replaceAll("\\\\/", "/").

The problem here is that a backslash is (1) an escape chararacter in Java string literals, and (2) an escape character in regular expressions – each of this uses need doubling the character, in effect needing 4 \ in row.

Of course, as Bozho said, you need to do something with the result (assign it to some variable) and not throw it away. And in this case the non-regex variant is better.