How to search in reverse order with String or StringBuilder in Java?

Question

Could you tell me how to search in reveres (reverse search) order in Java?

I need to do the same for searching in an HTML file as text.

Answer 1

[...] how to search in reveres order (reverse search) in java?

I assume that you are looking for a line starting at the end.

For this task you can use String.lastIndexOf(str) . This will find the last substring index str . If you want to continue searching from this point, you can add a second fromIndex argument.

Exactly the same methods exist for StringBuilder .

Answer 2

if you want to search the file 1. Open the file in random access mode. 2. Go to the end of the file. 3. then do a search on the line.