Having issue while extracting required part from a string

[chetan9529]

I have a string, and i want a specific part from that. String is: "Hello how are you doing." I want 4 letter after word "how" and 4 letter after word "you". Also want to add additional string in front that is Joy.
So my final output should be like, "Joyare doi"
Thanks

[Nepomuk]

Hi chetan and welcome to bytes.com!
I'm a little confused; you say you want the 4 letters after "how" but then "how" is in your answer. Should the answer maybe be "Joy are doi"?

[chetan9529]

Sorry for confusion.. Answer should be look like:
"Joyare doi"

[Nepomuk]

OK, you'll need two functions from the String class: indexOf(String) and substring(int, int).
The indexOf(String) function will allow you to find the first occurrence of a substring while substring(int, int) will extract a substring with the given indexes. Here's a short example of how to use them together:
[code=java]String alphabet = "abcdefghijklmn opqrstuvwxyz";
int beginIndex = alphabet.indexO f("fghi");
System.out.prin tln(alphabet.su bstring(beginIn dex, beginIndex + 3));[/code] The output of the above code is fgh.
This method can be applied to your problem easily.