包含反斜杠的字符串中的替换函数

Question

I am trying to use the following code but it is giving me complilation error. I need to replace \\ \\ (two backslashes) with \\ (one back slash )at all occurences.

           if (principal.contains('\\\\') != -1)
                    {

                        {
                            principal = principal.replaceAll("\\\\", "\\");
                        }
                    }

Can anyone suggest something for this

Answer 1

because '' for character , and you wrote String , so replace it like this:

   '\\\\' --->"\\\\"

---

and contains return boolean not int

principal.contains('\\\\')///will return true or false

---

and you not need for all this {}

 if (principal.contains('\\\\') != -1)
    {
        {///delete this
          principal = principal.replaceAll("\\\\", "\\");
        }////and delete this
    }