Problem splitting a string

I am trying to split up a filename into parts:

Code:

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            String filename = file.getName();
            System.out.println("File: "+filename);
            String[] parts = filename.split(".");
            System.out.println(parts[0]);

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My output is:

File: hello.txt

Then I get an indexoutOfBounds exception when trying to print out parts[0].

I even went so far as to iterate over each character in the filename string and keep a count of the "." instances, and it gives me back a 1 so I know it recognizes the period...not sure whats going on.

Quote:

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Originally Posted by sehudson

I am trying to split up a filename into parts:

Code:

---

            String filename = file.getName();
            System.out.println("File: "+filename);
            String[] parts = filename.split(".");
            System.out.println(parts[0]);

---

My output is:

File: hello.txt

Then I get an indexoutOfBounds exception when trying to print out parts[0].

---

split uses a regex and in regex "." has special meaning. You'll want to escape that period:

Code:

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String[] parts = filename.split("\\.");

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perfect. Thanks