How to escape "\" characters in Java

Question

As we all know,we can use

string aa=@"E:\dev_workspace1\AccessCore\WebRoot\DataFile" 

in c# in order not to double the '\'.

But how to do in java?

Answer 1

Unfortunately, there is no full-string escape operator in Java. You need to write the code as:

String aa = "E:\\dev_workspace1\\AccessCore\\WebRoot\\DataFile";

Answer 2

There is no whole string escape operator but, if it's for file access, you can use a forward slash:

String aa="E:/dev_workspace1/AccessCore/WebRoot/DataFile";

Windows allows both forward and backward slashes as a path separator. It won't work if you pass the path to an external program that mangles with it and fails, but that's pretty rare.

Answer 3

Might not be a direct answer to your question, but I feel this should be pointed out:

There's a system-dependent default name-separator character.

Answer 4

The really system-independent way is to do this:

String aa = "E:/dev_workspace1/AccessCore/WebRoot/DataFile";
String output = aa.replace('/', File.separatorChar);

It will give you "E:\dev_workspace1\AccessCore\WebRoot\DataFile" on Windows and "E:/dev_workspace1/AccessCore/WebRoot/DataFile" just about everywhere else.