How do I create a regular expression for this in android?

Question

Suppose I have a string like this:

string = "Manoj Kumar Kashyap";

Now I want to create a regular expression to match where Ka appears after space and also want to get index of matching characters.

I am using java language.

Answer 1

You can use regular expressions just like in Java SE:

Pattern pattern = Pattern.compile(".* (Ka).*");
Matcher matcher = pattern.matcher("Manoj Kumar Kashyap");
if(matcher.matches())
{
    int idx = matcher.start(1);
}

Answer 2

If you really need regular expressions and not just indexOf, it's possible to do it like this

String[] split = "Manoj Kumar Kashyap".split("\\sKa");
if (split.length > 0)
{
    // there was at least one match
    int startIndex = split[0].length() + 1;
}