Replace backslash with forward slash [duplicate]

Question

I have the following path: com/teama/merc/test/resTest And I want to convert it to this: com\teama\merc\test\resTest

I am trying to append the above path to this path: C:\Users\Toby\git\MERCury\MERCury\ With str.replace('/', '\\'); But when I append both of the strings together, this is the output: C:\Users\Toby\git\MERCury\MERCury\com/teama/merc/test/resTest

Here is the code in question:

    String home = System.getProperty("user.dir");
    path.replace('/', '\\');
    System.out.println(path);

    String folder = home + File.separatorChar + path;
    System.out.println(folder);

    File file = new File(folder);
    if(file.isDirectory())
    {
        System.out.println(file.getPath() + " is a directory");
    }

The appended path is not seen as a folder because of the slashes. Any help?

Edit: Just to clarify, the full path (both strings appended) is infact a folder.

Answer 1

In java, String's aren't mutable, so when you change them with something like the replace method, you have to reassign the variable to that changed String. So, you would have to change the replace code to this:

path = path.replace('/', '\\');