Thread: lastIndexOff

Hi everyone,

I almost have my program complete, at the moment I am working on the last part of this program.

I have in my program an option for the user to select a output file through a GUI screen.
Now I would like the program to look if there is a certain extension behind the file. (.xlsx)
If yes: continue.
else: put .xlsx behid it.

Now I was thinking of using lastIndexOf() as I have used indexOf somewhere else with succes.
But I can't get the lastIndexOf to start working, becasue of the folowing error:

outputFileName1 cannot be resolved to a type

outputFileName1 = defined as a String

String outputFileName1 = "";

Now I looked it up and the input needs to be a string.
string.lastIndexOf(".xlsx")

Now this string.lastIndexOf(".xlsx") works.
But not when I put it inside an if loop.

Is it not usable in a if loop or something?

outputFileName1.lastIndexOf(".xlsx") should be fine in a loop or not. If you have a compiler message and can't see how to fix it, post the whole mesage and the code to which it refers.

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I suspect you might find endsWith() a better method to use. It could be the case that .xlsx occurs, but not at the end like foo.xlsx.tar.gz and in that case you may not want to merely continue.

I figured it out.
lastIndexOf returns an int in my code.
So now I changed something and now it does work. :-))

Now I am happy, finished program one completly.