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

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.

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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);
}

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