How to replace "n" backslashes (\) with one?

Question

I would like to squeeze 'n' the number of slashes into 1, where n is not fixed.

For instance:

String path = "Report\\\\\\n"; 

Expected Result: "Report\\n"

I tried the following way

System.out.println(path.replaceAll("\\+", "\");

But he is typing "Report\\\n"

I can not reduce more.

All related questions / answers related to a fixed number of slashes.

Is there any general way I can compress all backslashes to one?

Answer 1

If you print path, you will receive:

Report\\\n

This is because it \must be quoted and written as \\in Java.

You should:

System.out.println(path.replaceAll("\\\\+", "\\\\"));

Explanation:

() , \, . , :

\\

Java \ \\, 4 \ s.

Answer 2

. .

System.out.println("Report\\\\\\n");
System.out.println("Report\\\\\\n".replaceAll("[\\\\]+", "\\\\"));

:

Report\\\n
Report\n

Answer 3

indexOf() lastIndexOf(), '\\....' , .

Answer 4

"\" String. .

int firstIndex = path.indexOf("\\");
int lastIndex = path.lastIndexOf("\\");
String result = path.substring(0, firstIndex) + path.substring(lastIndex, path.length());

Answer 5

:

.replaceAll("(?)[//]+", "/"); 

:

.replaceAll("(?)[\\\\]+", "\\\\");