Use String.split() with multiple delimiters

java regex

I think you need to include the regex OR operator:

String[]tokens = pdfName.split("-|\\.");

What you have will match:
[DASH followed by DOT together] -.
not
[DASH or DOT any of them] - or .

java regex

Try this regex "[-.]+". The + after treats consecutive delimiter chars as one. Remove plus if you do not want this.

java regex

You can use the regex "\W".This matches any non-word character.The required line would be:

String[] tokens=pdfName.split("\\W");

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