How to replace || (two pipes) from a string with | (one) pipe

Question

I am getting response for some images in json format within this tag:

\"xmlImageIds\":\"57948916||57948917||57948918||57948919||57948920||57948921||57

Answer 1

Use

.replace("||", "|");

| is no special char.

However, if you are using split() or replaceAll instead of replace(), beware that you need to escape the pipe symbol as \\|, because these methods take a regex as parameter.

For example:

public static void main(String[] args) {
    String in = "\"xmlImageIds\":\"57948916||57948917||57948918||57948919||57948920||57948921||57948‌922||57948923||57948924||57948925||57948926||5794892\"".replace("||", "|");

    String[] q = in.split("\"");
    String[] ids = q[3].split("\\|");
    for (String id : ids) {
        System.out.println("http://test/" + id);
    }
}